Hochiki CHQ-PCM(SCI) | Analogue Plant Control Module | 4 Relay Outputs, 4 Monitored Inputs, SCI

FAQ

What is the difference between the standard and DIN rail versions?

Both versions offer identical functionality with 4 relay outputs and 4 monitored inputs. The CHQ-PCM(SCI) is designed for standard mounting, while the CHQ-PCM/DIN(SCI) features a DIN rail mountable enclosure. The DIN version is more compact at 150g versus 322g for the standard version.

Can I use this module to control dampers and plant equipment?

Yes, the CHQ-PCM(SCI) is specifically designed for controlling devices such as dampers and plant equipment shutdown. The four change-over relay outputs provide volt-free contacts rated at 30 VDC max, 1 A for resistive loads, making them suitable for most building control applications.

How do I configure the inputs for different contact types?

Each input can be configured to monitor either normally open or normally closed contacts. The module also features a two-way DIL switch that allows you to enable or disable open and short circuit monitoring in pairs, providing flexibility for different installation requirements.

What happens to the relay contacts when the unit is first powered up?

The relay contact states will be indeterminate until the unit is fully powered and initialized by the fire alarm panel. Once operational, the contacts can be controlled individually by the connected fire alarm system.

Is the module suitable for outdoor installations?

The standard module has a basic IP rating, but when used with the optional CHQ-BACKBOX, the IP rating increases to IP65, making it suitable for more demanding environmental conditions including some outdoor applications.

What is the SIL Level 2 capability?

SIL (Safety Integrity Level) Level 2 capability means the module meets stringent safety standards for critical applications. A specific SIL Level 2 capable variant is available for installations requiring this level of safety certification.