Hochiki CHQ-SOM ESP Intelligent Single Output Module | Single Monitored Output, Flying Leads
£31.51 (inc VAT: £37.81)
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Key features
- Volt-free relay switches N/O or N/C
- Single output only, no monitored inputs
- Colour-coded flying leads plus terminal block
Downloads
Summary
The Hochiki CHQ-SOM is an addressable single output module that gives you a configurable volt-free relay output – normally open or normally closed – straight off the ESP loop, so you can switch a door holder, damper or external relay without running a separate circuit back to the panel.
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That simplicity is the point: where the Hochiki CHQ-POM in the same range adds two monitored inputs and a variable 2-32mA output for more complex signalling jobs, the CHQ-SOM is built for the straightforward single-switch task, keeping your design and your parts list lean when that’s all the job calls for. Fewer terminals to wire and fewer settings to configure means less time spent on commissioning for simple relay duties.
Three colour-coded flying leads handle the output wiring and a separate terminal block takes the loop connection, so you can land the device quickly without hunting for the right conductor on site.
Features
- Configurable N/O or N/C relay – set the contact to suit fail-safe or fail-secure logic on the device you’re driving
- Single dedicated output – a focused module for straightforward switching jobs, simpler to spec than the dual-input CHQ-POM
- Three colour-coded flying leads – speeds up identifying and landing the output wiring on site
- Wiring terminal block for loop connection – keeps loop termination separate from the output leads
- Compact ACS case – 65 x 42 x 15 mm and 25 g, easy to fit into tight back-box space
- LPCB approved – for use when mounted in an SMB-1 enclosure with the SMB-ADAPTOR plate
FAQ
Yes, the volt-free relay contact on the CHQ-SOM can be configured as either N/O or N/C depending on how you need the controlled device to fail. Check your wiring against the fail-safe or fail-secure requirement of the equipment you’re switching before commissioning. To keep LPCB approval valid, the module must be fitted inside an SMB-1 enclosure (or an equivalent impact-resistant polycarbonate enclosure meeting EN54-18:2005 Clause 5.9) using the SMB-ADAPTOR plate and two M3 screws or nuts and bolts. Fitting it in anything else voids the approval. The CHQ-SOM gives you one relay output only, while the CHQ-POM in the same range adds two monitored inputs and a user-selectable 2-32mA output for more involved signalling tasks. Pick the CHQ-SOM when all you need is a single switched contact off the loop. Hochiki states the relay contact state is indeterminate until the module is powered up, so don’t assume a default N/O or N/C state during pre-power testing or wiring checks. Confirm the state once power is applied and before connecting the controlled device. The datasheet doesn’t state a specific cable gauge for the loop terminal block or the flying leads, so check the installation instructions supplied with the unit or confirm with Hochiki before ordering cable. Hochiki notes that fire alarm control panel compatibility is required for this product, so confirm your panel supports ESP loop output modules before specifying the CHQ-SOM on a job.Can the relay be wired as normally open or normally closed?
What enclosure does the CHQ-SOM need?
How is the CHQ-SOM different from the CHQ-POM?
What state is the relay in before the unit is powered?
What cable sizes does the terminal block and flying leads take?
Does this work with any fire alarm panel?
Specifications
| Ordering Code | CHQ-SOM |
|---|---|
| Operating Voltage | 17 – 30 VDC |
| Quiescent / Alarm Current (Typ) | 150 µA (@ 41 V) |
| Output Ratings – Max Voltage | 30 VDC |
| Output Ratings – Max Current | 1 A (resistive load) |
| Operating Temperature Range | -10°C to +50°C |
| Storage Temperature Range | -30°C to +60°C |
| Maximum Humidity | 95% RH – non-condensing (at 40°C) |
| Colour / Case Material | Ivory / ACS |
| Weight | 25 g |
| Dimensions | L 65 x W 42 x D 15 mm |
| Approvals | LPCB |
Downloads
- Datasheet (Adobe PDF)
Additional information
| Weight | 0.1 kg |
|---|---|
| Device Type | |
| Protocol | |
| System Type |
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