LIEBERT® AC8™ Product Specification/Installation Sheet Description The Liebert AC8 is ideal for coordinated control of systems with redundant equipment, such as multiple environmental units or pumps. When the Liebert AC8 controller detects an alarm in an operating device, the Liebert AC8 enables a standby device and controls the device in alarm as configured, either leaving the device operating or disabling it. The Liebert AC8 controller can also balance usage of devices by rotating units through Operating and Standby modes according to a user-defined schedule. This helps keep redundant equipment operating efficiently and only when needed. The Liebert AC8 can perform routine testing of standby devices and alert personnel if a standby device fails an operating test and requires attention. The staging feature permits standby devices to be turned on or off when a sensor detects specified levels. For example, the Liebert AC8 might be configured to turn on a fan when the temperature reaches 75°F, then turn on a second fan at 80°F. When the temperature falls below 80°F, the second fan is turned off; when it drops below 75°F, the first fan is turned off. Liebert’s TW420 Temperature Transmitter may be connected to any of the four analog sensor inputs for staging and other functions. The Liebert AC8 can also monitor the status of connected devices and keep personnel apprised through local alarming. The Liebert AC8 employs local alarming and remote paging services to keep personnel on-site and at remote locations apprised of the equipment’s status. The Liebert AC8 controller can interface with anything that closes an electrical contact. To improve process efficiency and troubleshooting, the controller tracks data in three types of logs: alarm, event and trend. Features and Benefits • Custom configuration for specific applications • Paging capability—up to four pager numbers • Preconfigured on-board modem The Liebert AC8 has both a local LCD interface and a remote dial-up interface for configuration and monitoring. Liebert’s SiteScan® Web may also be used for monitoring, as well as some configuration functions. • Alarm, Event and Trend logs with time and date stamp • Battery backup to ensure alarm notification • Backup and download configuration files • User interface via RS232 or modem connection When an alarm condition arises, the Liebert AC8 displays alarm information, sounds an audible alarm, changes the state of the common alarm relay and turns connected devices on or off according to user configuration. If configured, the controller also sends pager notifications. • On-board audible alarm • Configuration data permanently stored in nonvolatile Electrically Erasable Programmable Read Only Memory (EEPROM) for protection against power loss • Real-time clock For other applications, contact your local Liebert representative or call 1-800-222-5877. • Status LEDs for verification and diagnostics 1 Hardware and Components Controller Board The controller board supports these connections: • Eight devices, with 1 digital input and 1 digital output per device • Up to four zones, with staging for each zone • Four 4-20mA analog inputs (one sensor per zone) • Two programmable digital relay outputs • Two Common Alarm outputs • One EPOP input Enclosure The Liebert® AC8™ comes standard in an enclosure, which features a key lock for added security. The enclosure is made of metal to accommodate secure conduit fittings and protect components against environmental debris. Liebert AC8 enclosure - External features Knockouts and access slots on top and bottom The digital inputs are dry contacts. The analog inputs are 4-20mA inputs. The digital outputs, programmable relay outputs and Common Alarm outputs are Form C contact relays. The Common Alarm output is one output with two sets of contacts. Key lock The point terminations are made using removable terminal blocks. This allows for easier access to the terminators, streamlining the process of connecting external devices to the Liebert AC8. LCD for configuration and operation • The enclosure is designed for easy wire routing and terminations. Access slots for communication cables and network wires are located on both the top and bottom of the enclosure. • The enclosure is 2-3/4" deep, allowing for recess mounting in a wall. The enclosure may also be flush-mounted. • The enclosure houses the controller board and Transformer Module. The controller board is a microprocessor-based platform for program execution. The firmware may be easily upgraded at the job site, simplifying the process of installing new firmware as it becomes available. Configuration data is stored in nonvolatile EEPROM to protect against power loss. An RS232 operator terminal port is included with each controller board for operator devices such as a simple CRT terminal or laptop PC. An integrated on-board modem allows remote access to the Liebert AC8. The modem is factoryconfigured, eliminating field configuration and wiring requirements. An RJ11 phone modem jack is also included. Keypad Display The keypad is a user interface mounted on the enclosure door of the Liebert AC8. The liquid crystal display (LCD) permits complete Keypad monitoring and configuration of the panel and is password-protected. The keypad display permits the Liebert AC8 to operate as a complete stand-alone panel. An IGM422 connection permits access to Liebert’s SiteScan® Web Enterprise Monitoring System. This connection allows information and alarms to be monitored from a centrally located command center. Liebert AC8 Components and Key Features Power On/Off switch Audible horn Battery pack Common Alarm connectors Transformer Module TB5: COMMON ALARM RELAY OUTPUTS NO C NC (TOP) NO C NC Manual Override Switch (outputs) BOTTOM LS1 + TB7: 24V INPUT START P11 ENABLE AUDIBLE TB3, TB4, TB5 OUTPUT RELAY RATINGS: 24V, 3A CLASS 2 ONLY. TB4: TOP Q11 LIEBERT BAR CODE P23: BATTERY BATTERY (BOTTOM) NC C NO NC C NO 2 LCD CONTRAST TP1 VBATT RELAY OUTPUTS GND ON S2 OFF ON 1 2 DIP 3 4 5 6 7 OUTPUT1 OUTPUT2 OUTPUT3 OUTPUT4 OUTPUT5 OUTPUT6 OUTPUT7 OUTPUT8 CTRLLOCK SENLOCK CMN ALR DS56 DS54 DS63 8 DS83 DS84 DS61 DS60 DS62 DS55 DS57 DS59 DS58 DS53 CAN TX CAN RX Modem (BOTTOM) (TOP) 4 3 MOP F PROG 574 TX 574 RX 485 RX 485 TX PFM2 1 7 6 5 REV (BOTTOM) (TOP) 4 Phone line connector 3 2 ASS 1 TB1 8 7 5 EPOP ON P19 MODEM DIS EN J11: PHONE PIN 3-TIP PIN 4-RING (TOP) 485 + (BOTTOM) — 422 + — + — + + — — + — AG TB9: ANALOG GROUND EPOP Digital input connectors 6 TB2: CONTACT INPUTS EPOP INPUT 1-2 TOP 3-4 BOTTOM Digital output connectors 8 PFM5 R334 2 INPUT1 INPUT2 INPUT3 INPUT4 INPUT5 INPUT6 INPUT7 INPUT8 C71 DS70 DS67 DS66 DS65 DS64 MODEM Power On/Off switch Control relay outputs EPOP contact input TB1: EPOP CONTACT INPUT TB1, TB2 INPUTS: DRY CONTACTS ONLY. Power receptacle Serial interface connector (RS232 / EIA574) 2 SiteScan Web connector (EIA422) Analog input connectors Dimensions - Enclosure and Transformer Modules ENCLOSURE 18" (457.2mm) TRANSFORMER MODULES (115V & 230V) Front view Front view 14" (355.6mm) 18" (457.2mm) 3.83" (97.2mm) Top/bottom view Top/bottom view 2.85" (72.39mm) 2.65" (67.3mm) Wiring Specifications Connection Supported Wire Type Maximum Wire Length Rating 750 ft. (225m) Dry Contact (24VDC, 10 mA) Digital Input/ EPOP 18-22 AWG Stranded & Unshielded 18 AWG* (recommended) Non Plenum - Belden 9740 Plenum - Belden 89740 Digital Output/ Control Relay 18-22 AWG Stranded & Unshielded 18 AWG* (recommended) Non Plenum - Belden 9740 Plenum - Belden 89740 Analog Input 2-Wire Transducer 18-22 AWG Stranded & Unshielded 18 AWG* (recommended) Non Plenum - Belden 9740 Plenum - Belden 89740 750 ft. (225m) 4-20 mA Signal Input Selectable Power Source (12/24VDC) Analog Input 4-Wire Transducer 18-22 AWG Stranded & Unshielded 18 AWG* (recommended) Non Plenum - Belden 8489 Plenum - Belden 88489 750 ft. (225m) 4-20 mA Signal Input Selectable Power Source (12/24VDC) Common Alarm Output 18-22 AWG Stranded & Unshielded 18 AWG* (recommended) Non Plenum - Belden 9740 Plenum - Belden 89740 Communication RS232 Null Modem Cable Communication EIA422 Liebert® SiteScan® Communication EIA485 18 AWG* (recommended) 20 AWG 22 AWG @3A 50 ft. (15m) @2A 100 ft. (30m) @1A 200 ft. (60m) @3A 40 ft. (12m) @2A 60 ft. (18m) @1A 100 ft. (30m) @3A 25 ft. (7m) @2A 35 ft. (10m) @1A 75 ft. (23m) 18 AWG* (recommended) 20 AWG 22 AWG @3A 50 ft. (15m) @2A 100 ft. (30m) @1A 200 ft. (60m) @3A 40 ft. (12m) @2A 60 ft. (18m) @1A 100 ft. (30m) @3A 25 ft. (7m) @2A 35 ft. (10m) @1A 75 ft. (23m) 24VAC@3A 24VAC @3A 50 ft. (15m) N/A 18-22 AWG Stranded & Shielded 22 AWG* (recommended) Non Plenum - Belden 9461 Plenum - Belden 88761 1000 ft. (300m) N/A 18-22 AWG Stranded & Shielded 22 AWG* (recommended) Non Plenum - Belden 9461 Plenum - Belden 88761 3000 ft. (900m) N/A N/A N/A 150 ft. (45m) 24VAC @1.3A Phone/Modem Line 4 Wire (Pins 3 & 4) RJ11 Connector 24VAC Power Connection (TB7) 18-22 AWG Stranded & Shielded 18 AWG* (recommended) Non Plenum - Belden 8770 Plenum - Belden 88770 Power Connections (Transformer Module) 115VAC 14 AWG Stranded & Unshielded Non Plenum - Belden 5101UE 150 ft. (45m) 115VAC @4A 230VAC 14 AWG Stranded & Unshielded Non Plenum - Belden 5101UE 150 ft. (45m) 230VAC @0.5A * Recommended 3 Liebert® AC8™ Specifications 115VAC Transformer Module / UML11500 Power Requirements 230VAC Transformer Module / UML23000 115VAC ±10% of nominal; 60Hz, 4A, 460VA 230VAC ±10% of nominal; 50Hz, 0.5A, 115VA 18 x 2-3/4 x 18 (457.2 x 69.85 x 457.2) 20.56 lb. (9.33 kg) NEMA 1 Four line, 20 character, backlit Building Wall or Structural Member 32ºF to 104ºF (0ºC to 40ºC) 0% RH to 95% RH (non-condensing) Dimensions: W x D x H, in. (mm) Weight (Assembled) Enclosure Type Liquid Crystal Display (LCD) Mounting Surface Ambient Operating Environment Processor Specifics Model Clock speed Total RAM Total FLASH Total EEPROM A/D Resolution (Analog IN) Modem Type Embedded Clock Type Clock battery backup type Clock battery life Modem battery backup type Modem battery life Communications Local Communications Remote: Modem (9600-N-8-1) Remote: Supported pagers SiteScan Web Motorola XC68HC812A4 16MHz 256Kb 4M 4K 12 Bit 14.4K bps Real-Time Clock Lithium Cell (non-replaceable) 7 years, constant, no power Nickel Cadmium (replaceable) 10 minutes at full load RS232 Baud rate 9600 bps, Parity=None, Data bits=8, Stop bits=1 9600 E-7-1 supports TAPI protocol version 1.8 IGM Protocol, EIA422 115VAC Transformer Module (TM115) 230VAC Transformer Module (TM230) Agency Listings UL CSA CE FCC Compliance Inputs & Outputs (Quantity) Digital Inputs (8) Analog Inputs (4) Digital Outputs (8) Common Alarm Outputs (2) UL1012 UL1585 C22.2 No. 66 and C22.2 No. 107.1 Yes N/A Dry Contact Closure 24VDC, 10 mA 4-20 mA signal input with selectable power source of 12VDC or 24VDC 24VAC, 3A 24VAC, 3A Ordering Information Quantity Part # AC8L115 AC8L230 201258P1 TW420 Description Liebert AC8 controller board & Transformer Module 115VAC with two 24VAC outputs (40VA each) and 115VAC receptacle in enclosure Liebert AC8 controller board & Transformer Module 230VAC with two 24VAC outputs (40VA each) in enclosure RS232 configuration cable Temperature Transmitter Wall 4-20 mA @ 45°F to 96°F Liebert Corporation 1050 Dearborn Drive P.O. Box 29186 Columbus, OH 43229 Telephone: 1-800-877-9222 Facsimile: 1-614-841-6022 www.liebert.com © 2005 Liebert Corporation All rights reserved throughout the world. Specifications subject to change without notice. ® Liebert and the Liebert logo are registered trademarks of Liebert Corporation. All names referred to are trademarks or registered trademarks of their respective owners. SL-31101_REV1_02-13 4