Edwards SIGA-CR — a Signature Series intelligent analog-addressable control relay module providing one Form “C” dry relay contact to control external appliances such as door closers, fans and dampers.
On command from the Signature loop controller the SIGA-CR activates its normally-open or normally-closed contact. Note what the module does and does not do: it does not supervise the state of the relay contact itself; instead the on-board microprocessor ensures the relay is in the proper ON/OFF state. Because all decisions are made at the module, communication speed on the loop stays low while control panel response time improves, and the loop is less sensitive to line noise and wiring properties — twisted or shielded wire is not required.
The SIGA-CR is the standard-mount version, installing to a North American 1-gang electrical box, which suits remote locations where only one module is needed. Separate I/O and data loop connections are made to the module.
Specifications
| Type code |
Personality code 8 (factory set; no user configuration required) |
| Address requirements |
Uses 1 module address |
| Operating voltage |
15.2 to 19.95 VDC (19 VDC nominal) |
| Operating current |
Standby 75 µA; activated 75 µA |
| Relay type and rating |
Form C, 2 A at 24 VDC, 0.5 A at 120 VAC, 0.25 A at 220 VAC (220 VAC is non-UL). Not rated for capacitive loads. |
| Mounting |
North American 2-1/2 in. (64 mm) deep 1-gang boxes, and 1-1/2 in. (38 mm) deep 4 in. square boxes with 1-gang covers and SIGA-MP mounting plates |
| Terminal wire size |
#18 AWG (0.75 mm²) to #12 AWG (2.5 mm²) |
| Construction and finish |
High impact engineering polymer |
| Operating temperature |
32°F to 120°F (0°C to 49°C) |
| Storage temperature |
-4°F to 140°F (-20°C to 60°C); humidity 0 to 93% RH |
| LED operation |
On-board green LED flashes when polled; on-board red LED flashes when in alarm/active |
| Compatibility |
Use with Signature Loop Controller; EST3, EST3X and iO Series control panels |
| Agency listings |
UL, ULC, CSFM (7300-1657:0121), MEA (S3424) |
| Ship weight |
0.4 lb (0.15 kg) |
Installation notes
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The contact is not supervised: the data sheet states plainly that this device does not provide supervision of the state of the relay contact. If your sequence of operation requires proof the controlled appliance actually changed state, that has to come from a separate monitored input.
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Check whether your load is pilot duty — the sheet is not consistent: the Application section gives the SIGA-CR contact rating as 2.0 A at 24 VDC with no qualifier, and reserves the “pilot duty” wording for the SIGA-CRR polarity reversal module. The specification table, however, applies “2 Amps @ 24 Vdc (pilot duty)” across all four catalog numbers including the SIGA-CR. Pilot duty is a materially different rating from a general-purpose one; confirm with Edwards before applying the full 2 A to an inductive or motor load.
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Not rated for capacitive loads. This is stated in the specification table.
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No configuration to do: personality code 8 is assigned at the factory. Unlike the input modules, there is no code to choose.
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Addressing: electronic, with no switches or dials. The loop controller assigns a soft address to each module’s unique serial number, or the SIGA-PRO Signature Program/Service Tool can be used.
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Power dependency: the module will not operate without electrical power.
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Maintenance: automatic self-diagnosis raises a trouble message when the module is defective, and single modules can be temporarily deactivated from the control panel. Plan scheduled maintenance to the AHJ’s requirements per current NFPA 72 and CAN/ULC-S536.
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Two modules in one box: the SIGA-MB4 bracket allows mounting two 1-gang modules in a 2-gang box.
Related models
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SIGA-MCR — functionally identical control relay built as a plug-in UIO module for SIGA-UIO2R, SIGA-UIO6R or SIGA-UIO6 motherboards, with wiring landed on the motherboard. Ship weight 0.18 lb (0.08 kg).
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SIGA-CRR — polarity reversal relay module: instead of a general control contact it reverses the polarity of its 24 VDC output to power and activate a series of SIGA-AB4G audible sounder bases on the data loop.
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SIGA-MCRR — the UIO plug-in version of the polarity reversal relay.
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SIGA-MB4 — transponder mounting bracket for two 1-gang modules in a 2-gang box.
Specifications taken from the Edwards data sheet “Control Relay Modules — SIGA-CR, SIGA-MCR, SIGA-CRR, SIGA-MCRR,” document E85001-0239, Issue 1.1. Manufacturer specifications are subject to change without notice.
