40/41/42AA Series ELECTRONIC MOTOR PROTECTION Product Overview The 40AA, 41AA, and 42AA series electronic motor protection modules combine high performance and function consolidation in order to provide reliable, cost effective protection for your motor needs. Used with Positive Temperature Coefficient (PTC) sensors the 40/41/42AA modules protect against locked rotor conditions, running overload and high ambient temperature. The innovative design offers additional functions as well, such as minimum off time delay, low voltage cutout and bearing temperature protection. Also the device is very safe and easy to calibrate for voltage (no jumper is required). Thermal protection is achieved by monitoring the temperature of the motor windings with PTC sensors. These sensors can be the Klixon BA series or any other compatible PTC sensor rated Mark A or B. If the windings exceed the rated trip temperature the sensor undergoes a rapid change in resistance relative to the change in temperature. As a result of this change, the 40/41/42AA modules' internal relays de-energize the control coil of the external line break contactor. As the motor cools and acceptable motor winding temperatures have been restored the sensor resistance decreases to the reset level. At this point the module will reset itself automatically unless it was set up for manual reset. In this case the user is required to remove power from the system for a minimum of 5 seconds. The 40/41/42AA series modules are Product Specifications Number Sensors/ Line Maximum Channels Channels Voltage Sensor Type ideal for many applications in the HVAC/R industry as well as for industrial systems. Some applications include global commercial rooftop A/C, global chiller applications, industrial pumps, material handlers, elevators, escalators, air compressors and industrial systems. General Specifications Time Low Auto/Man Delay Voltage Reset Units Min. oC -40 40AA110E 1 3 120/240 Mark A None None Automatic Operating Temperature Range 40AA115E 1 3 120/240 Mark A 5 min. None Automatic 41AA1105A 3 1 24 Mark B 4 min. None Automatic Supply Voltage 24 or 115-230 (±15%) 41AA1500E 3 1 120/240 Mark B None None Manual 41AA1600A 3 1 24V Mark B 2 min. Yes Automatic 41AA1600E 3 1 120/240 Mark B 2 min. Yes Automatic 41AA1606E 3 1 120/240 Mark B 4 min. Yes Automatic 42AA100E 1 3 120/240 Mark B None None Manual 40AA100E 1 3 120/240 Mark B None None Automatic Automatic 40AA300E 1 3 120/240 Mark B 4 min. Yes 41AA1504E 3 1 120/240 Mark B None Yes Manual 40AA200E 1 3 120/240 Mark B 4min. None Automatic 40AA100A 1 3 24V Mark B None None Automatic 40AA200A 1 3 24V Mark B 4 min. None Automatic 40AA102A 1 2 24V Mark B None None Automatic Printed in U.S.A. 11/2003 Typical Max. +70 VAC Hz 45 50/60 Low Voltage Cut-Out Trip (24V Input) VAC 15 16 Low Voltage Cut-In Reset VAC Low Voltage Cut-Out Trip (120V Input) VAC 79.5 85 Low Voltage Cut-In Reset VAC 90.5 94.5 Low Voltage Cut-Out Trip (240V Input) VAC 160 170 Low Voltage Cut-In Reset VAC 180 184 Rated Line Frequency 62 17 18 40/41/42AA Series ELECTRONIC MOTOR PROTECTION Protected Conditions Electrical Schematic 41AA Series 40AA, 42AA Series • Locked Rotor • Running Overload • High Motor Ambient • Blocked Ventilation • Single Phasing • Loss of Hermetic Compressor Charge Summary of Protection Features - • Thermal overload of Windings • Low Voltage Cutout • Electrically - Isolated Power Supply • Power Off Manual Resaet • Automatic Reset with Minimum Off Delay Timer • UL File Number SA3745 (41AA) • UL/CSA/CE pending on all other ratings Envelope Drawing 41AA Series 40AA, 42AA Series 2x ø .147 THRU M1 M2 L1 2x ø .147 THRU L2 3.200 M1 M2 L1 L2 3.200 2.838 ±.019 2.838 ±.019 X .181 .225 C 81 2.550 ±.020 X .181 .225 6X .250 X .032 MALE QUICK CONNECT TERMINAL TIN PLATED BRASS 1.467 C 81 82 83 2.550 ±.020 8X .250 X .032 MALE QUICK CONNECT TERMINAL TIN PLATED BRASS Specifications Supply Voltages........ 24VAC or 115-230 VAC (±15%) Frequency.................. 50/60 Hz Control Circuit.......... 2.5A, 600VA, 250V Max. Minimum Permissible Load...... 5VDC, 100mA Maximum Load........ 30VDC Cycle Life.................. 250k Cycles Min. Weight......................... 290 Grams 1.467 2.550 ±.020 2.550 ±.020 Thermal Motor Specification* 40AA Single Channel Ratings (Series Sensors) Sensor Trip Resistance Sensor Reset Resistance Sensor Resistance @ 25oC Nominal Resistance 28.0 KΩ 11.0 KΩ 1.5 - 7.5 KΩ 41AA Three Channel Ratings (Parellel Sensors) Sensor Trip Resistance Sensor Reset Resistance Sensor Resistance @ 25oC Nominal Resistance 14.0 KΩ 3.25 KΩ 0.5 - 2.5 KΩ 42AA Single Channel Ratings (Series Sensors) Sensor Trip Resistance Sensor Reset Resistance Sensor Resistance @ 25oC Nominal Resistance 20.0 KΩ Manual Reset 1.5 - 7.5 KΩ *Resistance measurement with analog meter instrument on Mark B sensors. Printed in U.S.A. 11/2003 Important Notice: Texas Instruments (TI) reserves the right to make changes to or discontinue any product or service identified in this publication without notice. TI advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current. TI assumes no responsibility for infringements of patents or rights of others based on TI applications assistance or product specifications since TI does not possess full access concerning the use or application of customers' products. TI also assumes no responsibility for customers' product designs. For further information write or call: Texas Instruments Incorporated 34 Forest St., MS 2-3 Attleboro, MA 02703-0964 Phone: (508) 236-3617 Fax: (508) 236-1949 www.ti.com/snc/products/controls/motor-aa.htm