Hochiki CHQ-PCM User Manual

PLANT CONTROL MODULE
INSTALLATION INSTRUCTIONS

Products covered: CHQ-PCM(SCI), CHQ-PCM/DIN(SCI)

The CHQ-PCM(SCI) is a loop powered output module with four independent change-over relay outputs, with N/O and N/C
volt free contacts. These outputs can be driven separately under the control of the fire alarm panel and can be used for
the control of devices such as dampers or for plant and equipment shutdown. Four inputs are provided for local fire and
fault monitoring and these are fully monitored for open and short circuit, which if required, can be enabled or disabled in

pairs using a two-way DIL switch. Note:- The state of the relay contacts will be indeterminate until the unit is

powered.

Components

Standard "Smart-Fix" Modules are supplied as two individual components (see Fig 1 & 2). DIN versions are supplied as
one unit (see Fig 3).

Fig 1

"Smart-Fix" CHQ Module (Back Plate inc PCB Component)

(Note: configuration of Wiring Terminal blocks differs between
models)

Setting the Loop Address



The analogue address of the Module is set using the first 7
switches of the 8-bit DIL switch, which in the case of the
Standard CHQ is located through the cut-out section on the
top of the PCB cover. On the DIN version, this switch is
located on the edge of the PCB behind the clear door (see
Fig 3).



The switches are numbered 1 to 8 (left to right):

CHQ
MODULE

DIN
MODULE



The switches should be set using a small-tipped
screwdriver or similar.



Refer to the Address Chart (Fig 5) on page 3 for a quick
reference on addresses.



Switch 8 is not used and must be switched to “OFF”.

SWITCH UP ON
SWITCH DOWN OFF
SWITCH UP OFF
SWITCH DOWN ON

Fig 2

CHQ-LID Transparent Module Lid

(Supplied with four screws and acrylic retaining washers)

Fig 3

DIN Rail Mountable CHQ Module

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Connection Details

The module has been designed for easy installation
and contains two connector blocks for termination of
the field wiring; refer to Fig. 4 (right) for correct
connection details.

A – EOL Monitoring Resistor, 10 KΩ
B – Operational Resistor, 470 Ω

(volt-free contact)

Setting the Fault Monitoring

The general purpose inputs on the
CHQ-PCM(SCI) are fully monitored for open and
short circuit, however, if the monitoring facility is not
required then they can be disabled by the two-way
DIL switch, refer to the table below:

CHQ MODULE

DIN MODULE

SWITCH 1 DOWN INPUTS 1 & 2 MONITORED

SWITCH 1 UP INPUTS 1 & 2 NOT MONITORED

SWITCH 2 DOWN INPUTS 3 & 4 MONITORED

SWITCH 2 UP INPUTS 3 & 4 NOT MONITORED

SWITCH 1 DOWN INPUTS 1 & 2 NOT MONITORED

SWITCH 1 UP INPUTS 1 & 2 MONITORED

SWITCH 2 DOWN INPUTS 3 & 4 NOT MONITORED

SWITCH 2 UP INPUTS 3 & 4 MONITORED

Fig 4

In Non-Monitored mode*,

the unit ignores open or
short-circuit condition –
but still requires 470 Ω to
activate.

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Specification





, 



Order codes

CHQ-PCM(SCI) (module)
CHQ-PCM/DIN(SCI) (DIN module)

Transmission method Digital communication using ESP

Operating voltage 17 - 41 Vdc

Loop

Quiescent current
Current consumption whilst polling

300
22 mA

A

20 %
Relay contact rating 30 Vdc max, 1 A (resistive load)
Input E.O.L resistor
Input threshold level

Isolator

Weight (g)
Dimensions (mm)

Colour and enclosure material

Fire alarm control panel compatibility is required for both variants of this product. See AP0127 for short-circuit isolator specifications.

Switch current (switch closed) 1 A
Leakage current (switch open) 3 mA (max)

CHQ Module

DIN Module 150 L119 x W108 x H24 (CHQ DIN Module)

10 k
ON=470

5%, 0.25 W

, Short cct <50 , Open cct >100 K

332 L157 x W127 x H35 (CHQ Module with lid),
567 H79 (CHQ Module with lid and CHQ-BACKBOX)

CHQ Module & CHQ-BACKBOX white ABS, DIN Module green ABS

Note:- All EOL and operational resistors are supplied with the unit – DO NOT DISCARD!

Installation – "Smart-Fix" Version

Set analogue address before installation (see page 1).
The fixing surface should be dry and stable.



Hold the back plate up against the fixing surface and
mark the position of the four corner fixing holes.



Determine which cut-out sections along the top and
bottom edges of the module require removing to
accommodate the cables being used.



Remove cut-outs by scoring with a sharp knife before
breaking off with pliers or snips.



Mount the back plate using appropriate fixings (not
supplied) for the fixing surface.



Terminate and connect field wiring as per the wiring
diagrams on pages 2 & 3 (and the terminal block
indications on the product label).

The transparent lid (CHQ-LID) is supplied with four screws
and eight retaining washers.



Push the screws through one of the retaining washers
and then through the holes in the lid from front to
back, pushing another retaining washer onto the end
inside the lid.



Screw the lid onto the back plate; do not over tighten
the screws as this could damage the unit.

NOTE: A white plastic version of the lid is available (sold
separately – CHQ-LID(WHT)).

Fig 5

Installation with Back Box

For installations requiring glanded cables, a module back box (CHQ-BACKBOX) is available (sold separately). This is
mounted on the fixing surface; the CHQ Module is then fitted to the top of the back box and the CHQ-LID is added creating
a sealed enclosure. For further details refer to the CHQ-BACKBOX Instructions (2-3-0-800). For CHQ-PCM installations
utilising heavy-duty cabling (for example, 1.5mm
plate and CHQ-ADAPTOR is recommended.
any glands used (not supplied) conform to IP67, if such ingress protection is required.

2

solid conductor) the use of the SMB-1 Box with the SMB-ADAPTOR

For further details refer to the SMB-ADAPTOR Instructions (2-3-0-1502).

Ensure

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Installation – DIN Version

Set analogue address before installation (see above) and write loop address in space provided on door label.



DIN modules should be mounted in an SMB-2 or SMB-3 enclosure in conjunction with an NS 35 mounting rail with
the loop connections at the bottom of the unit. Use glands that conform to IP65 if such ingress protection is required.



Terminate and connect field wiring as per the wiring diagram on page 2 (and the terminal block indications on the
product label).



Suitable anti-static precautions must be taken when handling these products.

Status LEDs

A green LED flashes each time the unit is polled by the fire alarm control panel.

An amber LED is continually illuminated when unit detects short-circuit fault.

CHQ-PCM(SCI) 0832-CPD-1679 11

EN54-17 Short Circuit Isolators

EN54-18 Input/Output Modules

Protocol
specified in
TI/006

CHQ-PCM/DIN(SCI) 0832-CPD-1680 11

Hochiki Europe (UK) Ltd
Grosvenor Road, Gillingham Business Park,
Gillingham, Kent, ME8 0SA, England
Telephone: [phone]
Facsimile: [phone]
Email: [e-mail]
Web: www.hochikieurope.com

Hochiki Europe (UK) Ltd. reserves the right to alter the specification
of its products from time to time without notice. Although every
effort has been made to ensure the accuracy of the information
contained within this document it is not warranted or represented by
Hochiki Europe (UK) Ltd. to be a complete and up-to-date
description. Please check our web site for the latest version of this
document.

2-3-0-1156/ISS2/OCT11