Oldham CPS Series User Manual

Page 20
CPS – User Manual
Inspecting the digital buses
Bicolor (red/green) LEDs located above each line start, on the motherboard, allows for inspection of
the bus links as follows:
LED appearance
Status
Red + Green LEDs lit (LEDs
blink rapidly, almost
imperceptibly)
Orange in appearance
Normal operation.
Red LED question
Green LED  response
Red LED blinks once per
second (green LED is off)
Red in appearance
Communication fault.
Missing or faulting module.
Irregular blinking
Poor communication quality
Both LEDs off.
No active modules
Mini-switches
Mini switch A allows the CPS controller to download and
read the user program. When the switch is in the “MEM”
position (open padlock), the user program memory is
accessible and the message “switch open” is displayed on
screen. The CPS central controller waits to download the
program from the COM_CPS software. The CPS central
controller goes into “shut-down” mode when mini switch A is
in the “MEM” position.
When the COM_CPS software programming is complete,
the mini switch should be flipped back to the “Prog” position
(closed padlock), and the central controller should be
rebooted to initialize all of the newly loaded settings.
Mini switch B only used for the central controller’s internal
microprocessor. It should always be in the “Run” position.
Internal relay and buzzer
The CPS central controller is equipped with 3 internal relays [R1, R2, R3] and a shared Buzzer.
The operating settings for the relays and the buzzer can be set with the COM_CPS software (see
table below).
The internal buzzer is activated when a specific program-defined event occurs (fault or alarm).
All lines share relays R1, R2, and R3.
The buzzer’s pitch will vary according to the alarm threshold. Alarms 1 and 2 have the same
frequency. Alarms 3 and 4 have a different pitch, allowing the operator to distinguish between alarm
levels.
The buzzer can be disconnected by removing the “buzzer activation strap” (J10) located on the
motherboard next to the buzzer (cf -: Overview of the Motherboard).
Function / Component
Relay R1
Relay R2
Relay R3
Buzzer
AL 1
X
X
X
X
AL 2
X
X
X
X
AL 3
X
X
X
X
AL 4
X
X
X
X
Module error
X
X
X
System fault*
X
X
X
Out of Range and Fault
X
X
X
X
Positive security
X
X
*: (System fault) alarm is triggered if there is a communication fault betweenmodules, a short-
circuit in a power supply line, or a module inversion.
X: Function can be activated or deactivated
: Default configuration setting, cannot be changed by user.
Bus 2
Bus 4
Bus 8
Communication DEL of the bus
Bus 6
interface
USB
P r o g
MEM
A
Run
Prg
B
Programming with
COM_CPS
Micro
programming
COM_CPS

Oldham CPS Series Specifications

General

Brand	Oldham
Model	CPS Series
Category	Gas Detectors
Language	English