Scott QuadScan II 7400, Руководство по эксплуатации и техническому обслуживанию, Страница: 62 / 121

57 of 116
If the default setting is not changed for a specific relay(s), then that relay will be activated when the
default alarm condition exists. For example if Relay 1 is programmed to activate when a specific
combination of alarms exist and Relays 2 through 8 have not been changed from the default settings then
these relays will also be activated if the alarm combination for Relay 1 includes that specific relay or
relays.
For the customer to customize a specific relay, that relay must be programmed for the desired customer
requirements. The basis for the programming procedure for a specific relay are the alarms warn (W),
alarm (A) and fail (F) which are generated within the QuadScan II for each channel when a gas or fail
condition is detected on that channel.
The programming functions available for each relay are:
W, A, F, 1, 2, 3, 4, &, , (, ).
The following explains the letters, numbers and symbols.
W, A, F Alarm conditions Warn (low alarm), Alarm (high alarm) and Fail (input loop open circuit
or shorted)
1, 2, 3, 4 Refers to the channel number
& AND Function: i.e W1 & W2
OR Function i.e. W1 W2
(, ) To separate one group of functions from another group of functions
The following examples explain the various functions.
If RMT RLY 1 is programmed as W1 & W2, to change the state of RMT RLY1, warn (W) from Channel
1 must be in alarm AND Warn (W) from Channel 2 must be in alarm.
If RMT RLY 3 is programmed as ( A1 & A2 ) (W3 & A4 ), to change the state of RMT RTL3, alarm
(A) from Channel 1 must be in alarm AND alarm (A) from Channel 2 must be in alarm OR warn (W)
from Channel 3 must be in alarm AND alarm (A) from Channel 4 must be in alarm.