Energy Management Power Analyzer with plug-in Output Modules Type WM22-DIN • Class 0.5 (current/voltage) • Three-phase power analyzer • Back-lighted LCD • 4 x 31/2 DGT instantaneous variables read out • 71/2 DGT energy read-out • Measurements of system and phase variables: W, Wdmd, var, VA, VAdmd, PF (cosϕ), V, A, Hz, THD-A, THD-V • Measurements of total energies: kWh, kvarh • Measurements of partial energies: kWh, kvarh • Energy measurements according to EN61036 and EN61268 • TRMS measurements of distorted wave forms (voltages/currents) • Two basic models: direct connection 20(90)AAC, CT 5(10)AAC and VT connection • Maximum value indication of W dmd and VA dmd (only 5A version); maximum value indication of A (only 90A version) • Self power supply (available for some models only) or auxiliary power supply: 24V, 48V, 115V, 230V, 50-60Hz; 18 to 60VDC, 77 to 143VDC • Degree of protection (front): IP 40 • Front dimensions: 9 DIN modules • Analogue output by means of optional module (20mA or 10VDC) • RS 422/485 Serial port by means of optional module • Alarm output by means of optional module • Dual pulse output by means of optional module • Control of phase asymmetry Product description Three-phase power analyzer with built-in configuration key-pad; Particularly indicated for the analysis of main, secondary and energy metering electrical variables. Housing for DIN-rail or wallmounting, IP40 (front) protection degree. Completely sealable housing. In case of direct connection up to 90A, the measuring input terminals are suitable for cables with a cross-sec- How to order 2 tion area from 6 to 35 mm . The special design of the instrument’s housing allows to add at any time the interface modules, even when the instrument is already installed. The following modules are available: - for all versions: pulses output; - only for the versions with auxiliary power supply: analogue output, RS485 port or alarm output. WM22-DIN AV5 3 X X XX Model Range code System Power supply Slot A Slot B Important note: • The models from AV0 to AV7 can be equipped with any type of available modules (slot A and B). • The models AV8 and AV9 can be equipped only with the “O” and “R” type modules. • The AV8 and AV9 models can measure all the parameters even if the three phase system being connected is missing one phase. • The Av2 model is suitable only for three-phase unbalanced system without neutral. Type selection Range Code Power supply Slot A (retransmission) Slot B (retransmission) Auxiliary Power Supply: AV0: 208VL-L/20(90)AAC [3] AV1: 400VL-L/20(90)AAC [1] AV3: 660VL-L/20(90)AAC [2] AV4: 208VL-L/5(10)AAC [3] AV5: 400VL-L/5(10)AAC [1] AV6: 100VL-L/5(10)AAC [3] AV7: 660VL-L/5(10)AAC [2] Self Power Supply: AV2: 220VL-L/20(90)AAC [4] AV8: 208VL-L/20(90)AAC [1] AV9: 400VL-L/20(90)AAC [1] For all versions A: 24VAC -15+10%, 50-60Hz B: 48VAC -15+10%, 50-60Hz C: 115VAC -15+10%, 50-60Hz D: 230VAC -15+10%, 50-60Hz 4: 18 to 60VDC 5: 77 to 143VDC AV2, AV8 and AV9 only X: Self Power Supply 400VL-L (-20+15%, 50-60Hz) 208VL-L (-20+15%, 50-60Hz) 220VL-L (-10+15%, 50-60Hz) X: O: Only with A-B-C-D-4 power supply XX: None A1: AO2920 module 0-20mADC analogue output V1: AO2921 module 0-10VDC analogue output S0: AR2950 module RS422/485 serial port System 3: Three-phase, unbalanced load with or without neutral [1] Un: -20+15% [2] Un: -30+15% [3] Un: -20+20% Specifications are subject to change without notice R: None AO2900 module Dual open collector output Three operating modes: • two pulse outputs (kWh and kvarh); • one alarm output and one pulse output (kWh or kvarh) • one output which is remotely controlled by a serial port and one pulse output (kWh or kvarh) AO2910 module. One relay output + one open collector output. Operation modes like module AO2900. [4] Un: -10 +15% WM22-DINDS1003 1 WM22-DIN Input specifications Number of inputs Current Voltage Accuracy (display, RS485) Current Voltage Frequency Active power (@ 25°C ± 5°C, R.H. ≤ 90%) Reactive power (@ 25°C ± 5°C, R.H. ≤ 90%) Apparent power (@ 25°C ± 5°C, R.H. ≤ 90%) Energies (@ 25°C ± 5°C, R.H. ≤ 90%) Harmonic distortion (@ 25°C ± 5°C, R.H. ≤ 90%) Ib 5A Ib 20A Additional errors Wave form Voltage asymmetry Magnetic induction HF Electromagnetic fields Operation of accessories Temperature drift Sampling rate Display Type Instantan. variables read-out Energies 3 4 Ib: 5A, Imax: 10A Ib: 20A, Imax:90A Un: see previous page “Range code” from 0.003Ib to 0.2Ib: ±(0.5%RDG +3DGT) from 0.2Ib to Imax: ±(0.5%RDG +1DGT) in the range Un: ±(0,5% RDG + 1DGT) ±0.1% RDG (50 to 60 Hz) ±(1% RDG +1DGT). PF 1, 0.1Ib to Imax, in the Un range; PF 0.5L, PF 0.8C, 0.2Ib to Imax, in the Un range ±(2% RDG +1DGT). sinϕ 1, 0.05Ib to Imax, in the Un range; sinϕ 0.5L, sinϕ 0.5C, 0.1Ib to Imax, in the Un range ±(1% RDG +1DGT). PF 1, 0.1Ib to Imax, in the Un range Class 1 acc. to EN61036 Class 2 acc. to EN61268 Ib: 5A, Imax: 10A 0.1Ib: 500mA, Start up corrent: 20mA Un: see table “range code” Ib: 20A, Imax: 90A 0.1Ib: 2A, Start up current: 80mA Un: see table “range code” ±3% f.s. (f.s.: 100%) up to the 7th harmonic; Un: see table “range code” Imin: 500mA; Imax: 15Ap; Imin: 2A; Imax: 127Ap; Max. and Min. indication Measurements Coupling type Crest factor Ib 5A Ib 20A Current overload 5(10) A, for 10ms 5(10) A, for 500ms 5(10) A, permanent 20(90) A, for 10ms 20(90) A, permanent Voltage overload Permanent For 1s Input impedance 400VL-L (AV1-AV5-AV9) 208VL-L (AV0-AV4-AV8-AV2) 660VL-L (AV3-AV7) 100VL-L (AV6) 5(10) A (AV4-AV5-AV6-AV7) 20(90) A (AV0-AV1-AV3-AV8-AV9) 20(90) A (AV2) Frequency Acc. to EN61036, EN61268 <1% (3rd harmonic: 10%) < 0.5% (referred to Un) 0 (up to 0.5 mT) < 1% 0 ≤ 200ppm/°C 1000 samplings/s @ 50Hz Back-lighted LCD 4x31/2 DGT Total:1x71/2 DGT Partial: 1x71/2 DGT Max. 1999 (19999999), Min. 0 Current, voltage, power, energy, power factor, frequency, harmonic distortion (see display specs). TRMS measurements of distorted wave forms. Direct ≤3 (15A max. peak) ≤6 (127A max. peak) 300 A max, @ 50Hz 200 A max, @ 50Hz 10A, @ 50Hz 2700A max, @ 50Hz 90A, @ 50Hz 1.2 Un 2 Un > 720KΩ > 720KΩ > 1.97MΩ > 400KΩ < 0.3VA < 4VA < 4VA 50 to 60 Hz Interface module specifications Analogue outputs (on request) Number of outputs Range Accuracy Temperature drift Scaling factor 2 1 0 to 20 mADC (AO2920 module slot B, only for versions with auxiliary power supply) 0 to 10VDC (AO2921 module slot B, only for versions with auxiliary power supply) ±0.5% F.S. ≤ 300 ppm/ °C Programmable within the whole range of retransmission; it allows the retransmission of all the values included in the following ranges: 0 and 20mADC, 0 and 10VDC Response time System variables FFT off, filter off FFT on, filter on variables Filter off Ripple Load 20 mADC 10 VDC Insulation V, W, VA, var, PF (cosϕ) 900ms 1.4s THD-V, THD-A 3s ≤ 1% according to IEC 60688-1, EN 60688-1 ≤ 500 Ω ≥ 10 kΩ By means of optocouplers, 2000 VRMS between output and measuring input Specifications are subject to change without notice WM22-DINDS1003 WM22-DIN Interface module specifications (cont.) RS422/RS485 (on request) Type Connections Addresses Protocol Data (bidirectional) Dynamic (reading only) Static (writing only ) Data format Baud-rate Insulation Digital outputs (on request) AO2900 module Pulse outputs Number of outputs Number of pulses Output type Pulse duration 2000 VRMS between output and power supply input AR2950 module Multidrop bidirectional (static and and dynamic variables) 2 or 4 wires, max. distance 1200m, termination directly on the module 255, selectable by key-pad MODBUS/JBUS Insulation Alarm output Number of outputs Alarm type Phase and system variables: see table “Display pages” All the programming data, reset of energy, activation of static output. Stored energy (EEPROM) max. 19.999.999 kWh/kvarh 1 start bit, 8 data bit, no parity, 1 stop bit 9600 bit/s By means of optocouplers, 2000 VRMS output to measuring inputs 2000 VRMS output to supply input Setpoint adjustment Hysteresis On-time delay Response time system variables FFT off, filter off FFT on, filter on variables Filter off Output type Insulation To be used as alarm, energy retransmission, or remote static outputs. Three working modes are selectable: • two pulse outputs (kWh and kvarh); • one alarm output and one pulse output (kWh or kvarh) • one output remotely controlled by means of the serial port and one pulse output (kWh or kvarh) AO2910 module 2 From 0.01 to 100 pulses programmable according to the selected CT and VT ratios Open collector (transistor NPN) VON 1.2 VDC / max. 100 mA VOFF 30 VDC max. 220 ms (ON), ≥ 220 ms (OFF) Specifications are subject to change without notice WM22-DINDS1003 Pulse output Alarm output Output type Insulation According to DIN43864 By means of optocouplers, 2000 VRMS outputs to measuring inputs, 2000 VRMS output to supply input. Insulation between the two outputs: functional 1 Up alarm, down alarm phase asymmetry, phase loss. 0 to 100% of the electrical scale 0 to 100% of the electrical scale 0 to 255 seconds V, W, VA, var, PF (cosϕ) 700ms 1.2s THD-V, THD-A 3s Open collector (transistor NPN) VON 1.2 VDC / max. 100 mA VOFF 30 VDC max. By means of optocouplers, 2000 VRMS output to measuring input, 2000 VRMS output to supply input. Insulation between the two outputs: functional Relay + open collector output. Working mode like AO2900. One static output+one relay output, other characteristics like AO2900. Only relay output, other characteristics like AO2900. Static type like module AO2900; Relay type: SPDT, AC1, AC15: 1AAC @250VAC By means of optocouplers, 2000 VRMS outputs to measuring inputs, 2000 VRMS output to supply input. Insulation between the two outputs: 2000 VRMS 3 WM22-DIN Software functions Password 1st level 2nd level System selection Transformer ratio CT VT Scaling factor Operating mode Numeric code of max. 3 digits 2 protection levels of the programming data Password “0”, no protection Password from 1 to 1000, all data are protected Three-phase with neutral Three-phase without neutral 1 to 5000 1.0 to 199.9 and 200 to 1999 Note: The CT ratio* VT ratio must never exceed the value 5000. The current measuring inputs can manage CT’s with a secondary of 1A and 5A (the accuracy always refer to 5A) Electrical range Filter Filter operating range Filter coefficient Filter action Display System variables Single phase variables System variables Single phase variables 20(90) A 5(10) A Compression/expansion of the measuring range to be connected to the analogue output. Programmable within the whole measuring range. 0 to 99.9% of the input electrical scale. 1 to 16 Alarm, analogue and serial output (fundamental variables: V, A, W and their derived ones). Up to 4 variables per page Page 1: W-var-PF (cosϕ) Page 2: W dmd - VA dmd - Hz Page 3: THD-V Page 4: THD-A Page 5: kWh total Page 6: kvarh total Page 7: kWh partial Page 8: kvarh partial Page 9: VL-N Page 10: A Page 11a: A MAX Page 11b: W dmd MAX VA dmd MAX Page 12: W Page 13: VA Page 14: var Page 15: PF (cosϕ) Supply specifications Self supplied version Auxiliary power supply 400VL-L -20% +15%, 50-60Hz 208VL-L -20% +15% , 50-60Hz 220VL-L -10% +15% , 50-60Hz 230VAC -15 +10%, 50-60Hz Energy consumption 115VAC -15 +10%, 50-60Hz 48VAC -15 +10%, 50-60Hz 24VAC -15 +10%, 50-60Hz 18 to 60VDC 77 to 143VDC ≤ 7VA General Specifications Operating temperature Storage temperature Installation category Insulation Dielectric strength Noise rejection CMRR EMC Burst Immunity to irradiated electromagnetic fields Electrostatic discharges Radio frequency emissions 4 0 to +55°C (R.H. < 90% non-condensing 40°C) Pulse voltage (1.2/50µs) Standards Safety Metrology 8kV (EN61000-4-5) IEC664-1 Energy measurements: EN61036, EN61268. (R.H. < 90% non-condensing 40°C) Pulse output DIN43864 Cat. III (IEC 664) Approvals CE 2000 VRMS between all inputs / Connections 5(10) A Screw-type, outputs to earth Cable cross-section area 4 mm2 4000 VRMS for 1 minute Connections 20(90) A Screw-type, Min./Max. cable cross-section area 6 mm2 / 35 mm2 Min./Max. screws tightening torque 2 Nm / 6 Nm 100 dB, 48 to 62 Hz Housing Dimensions 162.5 x 90 x 63 mm 4kV/level 4 (EN61000-4-4) Material ABS, NORYL, PC self-extinguishing: UL 94 V-0 10V/m 26-1000MHz Mounting DIN-rail and wall (EN61000-4-3) Degree of protection Front: IP40 15kV (EN61000-4-2) Connections: IP20 according to CISPR 14 Weight 800 g approx. and CISPR 22 (packing included) -20 to +60°C Specifications are subject to change without notice WM22-DINDS1003 WM22-DIN Function description Input and output scaling capability Working examples of the analogue output (Y) versus the input variable (x) - (input/output scaling possibilities). Figure A The sign of measured quantity and output quantity remains the same. The output quantity is proportional to the measured quantity. Figure B The sign of measured quantity and output quantity remains the same. With the measured quantity being zero, the output quantity already has the value Y1 = 0.2 Y2. Live zero output. 0 50 A 100 A 0 10 mA 20 mA 80 V 100 V 120 V 0 5 mA 10 mA 0 50 A 100 A 4 12 mA 20 mA Figure C The sign of measured quantity and output quantity remains the same. On the range X0...X1, the output quantity is zero. The range X1...X2 is delineated on the entire output range Y0=Y1...Y2 and thus presented in strongly expanded form. Mode of Operation Waveform of the signals that can be measured Figure D Sine wave, undistorted Fundamental content 100% Harmonic content 0% Arms = 1.1107 | A | Figure E Sine wave, indented Fundamental content 10...100% Harmonic contents 0...90% Frequency spectrum: 3rd to the 16th harmonic Additional error: <1% rdg Figure F Sine wave, distorted Fundamental content 70...90% Harmonic content 10...30% Frequency spectrum: 3rd to the 16th harmonic Additional error: <0.5% rdg Harmonic distortion analysis THD (AL2), THD (AL3) Anaysis principle FFT Harmonic measurement Current Voltage Up to the 7th harmonic Up to the 7th harmonic Type of harmonics Read-out THD % System The harmonic distortion can be measured in 3-wire or 4-wire systems. THD (VL1), THD (VL2), THD (VL3), THD (AL1) Specifications are subject to change without notice WM22-DINDS1003 5 WM22-DIN Display pages Variables that can be displayed 1st variable 2nd variable No 1 W sys PF sys W dmd Hz 2 3 4 5 6 7 8 9 10 11a 11b 12 13 14 15 VL1 THD AL1 THD kWh kvarh kWh kvarh VL1 AL1 W dmd MAX AL1 MAX WL1 VAL1 VarL1 PFL1 3rd variable Var sys VA dmd 4th variable VL2 THD AL2 THD VL3 THD AL3 THD VL2 AL2 VA dmd MAX AL2 MAX WL2 VAL2 VarL2 PFL2 VL-3 AL3 VL-L sys Err AL3 MAX WL3 VAL3 VarL3 PFL3 W sys VA sys Var sys PF sys Notes sys = system dmd = demand (integration time from 1 to 30 minutes) THD = tot. harmonic distortion THD = tot. harmonic distortion total energy total energy partial energy partial energy sys = system Err = in case of negative power Only version 1-5A, dmd = demand Only version 90A sys = system The system value remains always 0 if the neutral is not connected Used calculation formulas Phase variables Instantaneous effective voltage System variables Equivalent system voltage Instantaneous active power System reactive power Note: i = phase (L1, L2 or L3) T = variable (V or I) n = harmonic order Consumption recording Instantaneous power factor (TPF) System active power Instantaneous effective current System apparent power Instantaneous apparent power System power factor (TPF) Instantaneous reactive power Total harmonic distortion Note: i = phase (L1, L2 or L3) P = active power Q = reactive power t1, t2 = starting and ending time points of consumption recording n = time unit ∆t = time interval of consumption recording n1, n2 = starting and ending discrete time points of consumption recording List of the of the variables that can be connected to the analogue and alarm output N° 1 2 3 4 5 6 Variable V sys W sys var sys VA sys PF sys Notes sys = system sys = system sys = system sys = system sys = system N° 6 7 8 9 10 Variable THD-V THD-A VA dmd W dmd ASY Notes Max. THD value among the three phases Max. THD value among the three phases Power demand in the selected integration time Phase asymmetry Specifications are subject to change without notice WM22-DINDS1003 WM22-DIN Available models Type WM22-DIN AV9.3.X. WM22-DIN AV8.3.X. WM22-DIN AV2.3.D. WM22-DIN AV1.3.D. WM22-DIN AV0.3.D. WM22-DIN AV3.3.D. WM22-DIN AV1.3.C. WM22-DIN AV0.3.C. WM22-DIN AV3.3.C. WM22-DIN AV1.3.B. WM22-DIN AV0.3.B. WM22-DIN AV3.3.B. WM22-DIN AV1.3.A. WM22-DIN AV0.3.A. WM22-DIN AV3.3.A. WM22-DIN AV5.3.D. WM22-DIN AV4.3.D. WM22-DIN AV7.3.D. WM22-DIN AV5.3.C. WM22-DIN AV4.3.C. WM22-DIN AV7.3.C. WM22-DIN AV5.3.B. WM22-DIN AV4.3.B. WM22-DIN AV7.3.B. WM22-DIN AV5.3.A. WM22-DIN AV4.3.A. WM22-DIN AV7.3.A. WM22-DIN AV6.3.D. WM22-DIN AV6.3.C. WM22-DIN AV6.3.B. WM22-DIN AV6.3.A. WM22-DIN AV1.3.4 / [5] WM22-DIN AV0.3.4 / [5] WM22-DIN AV3.3.4 / [5] WM22-DIN AV5.3.4 / [5] WM22-DIN AV4.3.4 / [5] WM22-DIN AV7.3.4 / [5] WM22-DIN AV6.3.4 / [5] Inputs 400VL-L, 20(90)A 208VL-L, 20(90)A 220VL-L, 20(90)A 400VL-L, 20(90)A 208VL-L, 20(90)A 660VL-L, 20(90)A 400VL-L, 20(90)A 208VL-L, 20(90)A 660VL-L, 20(90)A 400VL-L, 20(90)A 208VL-L, 20(90)A 660VL-L, 20(90)A 400VL-L, 20(90)A 208VL-L, 20(90)A 660VL-L, 20(90)A 400VL-L, 5(10)A 208VL-L, 5(10)A 660VL-L, 5(10)A 400VL-L, 5(10)A 208VL-L, 5(10)A 660VL-L, 5(10)A 400VL-L, 5(10)A 208VL-L, 5(10)A 660VL-L, 5(10)A 400VL-L, 5(10)A 208VL-L, 5(10)A 660VL-L, 5(10)A 100VL-L, 5(10)A 100VL-L, 5(10)A 100VL-L, 5(10)A 100VL-L, 5(10)A 400VL-L, 20(90)A 208VL-L, 20(90)A 660VL-L, 20(90)A 400VL-L, 5(10)A 208VL-L, 5(10)A 660VL-L, 5(10)A 100VL-L, 5(10)A Power supply Self power supply Self power-supply Self power-supply 230VAC, 50-60Hz 230VAC, 50-60Hz 230VAC, 50-60Hz 115VAC, 50-60Hz 115VAC, 50-60Hz 115VAC, 50-60Hz 48VAC, 50-60Hz 48VAC, 50-60Hz 48VAC, 50-60Hz 24VAC, 50-60Hz 24VAC, 50-60Hz 24VAC, 50-60Hz 230VAC, 50-60Hz 230VAC, 50-60Hz 230VAC, 50-60Hz 115VAC, 50-60Hz 115VAC, 50-60Hz 115VAC, 50-60Hz 48VAC, 50-60Hz 48VAC, 50-60Hz 48VAC, 50-60Hz 24VAC, 50-60Hz 24VAC, 50-60Hz 24VAC, 50-60Hz 230VAC, 50-60Hz 115VAC, 50-60Hz 48VAC, 50-60Hz 24VAC, 50-60Hz 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] 18-60VDC [77-143VDC] Ordering code AF2100 AF2101 AF2144 AF2102 AF2103 AF2104 AF2105 AF2106 AF2107 AF2108 AF2109 AF2110 AF2111 AF2112 AF2113 AF2114 AF2115 AF2116 AF2117 AF2118 AF2119 AF2120 AF2121 AF2122 AF2123 AF2124 AF2125 AF2126 AF2127 AF2128 AF2129 AF2130 [AF2137] AF2131 [AF2138] AF2132 [AF2139] AF2133 [AF2140] AF2134 [AF2141] AF2135 [AF2142] AF2136 [AF2143] Available modules Type Open collector output 0-20mADC analogue output Relay + open c. output Channels 2 1 2 Code AO2900 AO2920 AO2910 Type 0-10VDC Analogue Output RS485 Serial Output Channels 1 1 Code AO2921 AR2950 Possible module combinations Power supply Basic unit Open collector output Relay + open c. output Auxiliary p.s. Self p.s. Slot A Slot B Slot A Slot B Specifications are subject to change without notice Power supply Basic unit Analogue output RS485 Serial Output (*) AV2 only WM22-DINDS1003 Auxiliary p.s. Self p.s. Slot A Slot B Slot A Slot B (*) (*) 7 WM22-DIN Wiring diagrams 20(90)A model: three-phase unbalanced load Fig. 1 Auxiliary power supply Self-power supply Fig. 3 20(90)A model: three-phase unbalanced load Direct connection (3-phase system) LOAD LOAD Direct connection (3-phase system+N) Self-power supply Fig. 2 AC power supply LOAD AC power supply Direct connection (3-phase system) 5(10)A model: three-phase unbalanced load Fig. 4 Auxiliary power supply Fig. 5 Direct connection (3-phase system + N) Auxiliary power supply Fig. 6 AC power supply LOAD LOAD AC power supply Direct connection (3-phase system with or without neutral) LOAD Auxiliary power supply CT connection (3-phase system+N) 5(10)A model: three-phase unbalanced load Fig. 8 LOAD Auxiliary power supply Fig. 9 AC power supply AC power supply CT ARON connection (3-phase system) 8 Auxiliary power supply VT and CT ARON connection (3-phase system) LOAD Fig. 7 AC power supply LOAD Auxiliary power supply VT and CT connection (3-phase system + N) Specifications are subject to change without notice WM22-DINDS1003 WM22-DIN Wiring diagrams (optional modules) Open collector output Fig.10 Relay + open collector output Fig. 11 VDC max 30V Only open collector outputs: the grounds of the outputs are separated, and therefore it’s possible to carry out, for the same module, two different connections. The load resistance (Rc) must be designed so that the closed contact current is lower than 100mA; the VDC voltage must be lower than or equal to 30V. VDC: power supply voltage output. Vo+: positive output contact (open collector transistor). GND: ground output contact (open collector transistor). Analogue output Fig. 12 Current and voltage RS485 Serial output 4-wire connection Fig. 13 RS485 Serial output Fig. 14 2-wire connection Front panel description 4 3 2 1 Keys for: - value programming; - function selection; - displaying the measuring pages. 2. Display LCD with alphanumeric indications to: - display configuration parameters; - display all the measured variables. 3. Removable label Label to write the instrument ID number. 1. Key-pad To program configuration parameters and to display variables. 4. Hidden dip-switch Enable/ disable the access to the programming procedure. S-key to enter programming and confirm selections; Specifications are subject to change without notice WM22-DINDS1003 9 WM22-DIN Dimensions and panel cut-out Terminal boards 10 Analogue output module Dual output open collector module Relay output module + open collector output RS485 serial output module AO 2920: 0-20 mA AO 2921: 0-10 V AO 2900 AO 2910 AR 2950 Specifications are subject to change without notice WM22-DINDS1003