User's Manual

VCM manual 2006.08.07
7
SUPERVISORY SIGNAL
♦ DEVICE (WS-LD) SUPERVISION SIGNAL:
In normal condition, VCM will receive supervisory signal from WS-LD at intervals of 4 hrs randomly.
If this supervision signal is not received for 12 hrs, VCM will report as “out of order” and LED on VCM
will flash in duty cycle to indicate device is out-of-order.
♦ If the device is out-of-order, LED will flash and 2 long beeps will sound at intervals of 45 sec.
♦ VCM SUPERVISION SIGNAL:
After installation, the VCM will automatically transmit Supervisory signals periodically
to the CTC-1042
/ CTC-1040 at intervals of 24~39 hrs randomly.
SELF-CHECKING
The VCM will check the motor every 45 days by performing a self-test. The self-test comprises of one cycle
[valve-shut] + [valve-open] action.
<NOTE:>
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2
2
WS-LD / RS
1~10
VCM 2
VCM 1
WS-LD / RS
1~10
CTC-1040
or
CTC-1042
Other sensors
SD / WS-LD / CO / GAS / PB/ WTR…
1~8
Total
max.
30
devices