Barnett Engineering ProTalk Plus B1290, Руководство по эксплуатации, Страница: 40 / 82

Alarm Delay (Debounce)
This parameter controls the amount of time an alarm must be present be-
fore it actually registers as an alarm. This feature is often used to eliminate
fleeting alarms, where the device in the field does not present a clean clo-
sure to indicate an alarm, but a series of bounces on the contacts. Another
example might be to overcome momentary power fluctuations which
cause false alarms to be reported. The debounce on each alarm may be indi-
vidually set.
B1290: Alarm One Delay is _ _ point _ seconds
YOU:
X**
( x = 0.1 to 19.9 )
The value must be entered in tenths of a second, from 1 to 3 digits. The last
digit entered is interpreted as the least significant, i.e. tenths of a second.
Default: 0.5 seconds
2
ÞÞ
: Using Directory
B1290: Alarm One is Directory A
YOU:
0**
Off
1**
Directory A
2**
Directory B
3**
Directory C
4**
Directory D
**
Next
Default: 1 (Directory A)
The selected directory will determine which sequences of actions is per-
formed when this alarm is active. Each alarm can use any directory. If the
Directory Control Code is used there are restrictions on what directories
should be used - refer to Program Code 2 Directories for details.
3
ÞÞ
: Relay Setup
Relay Timer Timescale
The interval timers on the relay outputs can operate with a resolution of 1
second or 1 minute. When the B1290 speaks ‘seconds’ for this value it is in-
dicating that the timer is counting in 1 second steps and when it speaks
‘minutes’ it is counting in 1 minute steps.
B1290: Relay Timer is seconds
YOU:
0**
Seconds
39 Program Codes