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Hach sc200 - Relay on Time; Relay Setup; Relay Timer Timescale; Using Directory

Hach sc200
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PAGE 24 PROGRAM CODES
least significant, i.e. tenths of a second.
Default: 0.5 seconds
Using Directory
B1290: "Alarm One is Directory A"
YOU:  Off
 Directory A
 Directory B
 Directory C
 Directory D
Exit
 Next
Default: 1 (Directory A)
The selected directory will determine which sequences of actions are performed 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.
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 indicating 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:  Seconds
 Minutes
 Next
Default: 0 (seconds)
Relay On Time
The B1290 has four relays that are turned On with the relay On codes and turned Off with the relay Off
codes. The relay timer may be used to turn On a relay for a specified duration and then turn it Off automatically.
The timer controls the period of time the relay is On. The interval is programmable from 1 to 199 seconds or
from 1 to 199 minutes depending on the setting of the relay timescale. The timers for each relay are
programmed separately and operate independently.
Setting the time to zero will make the relay an On/Off type of relay. Setting the timer with the # digit makes the
relay operate as a ‘special function’ output. This function is only available on the main ProTalk Plus unit and
not on the expanders. The special functions are:
Relay 1 Unacknowledged Alarm Present
Relay 2 Any Alarm Present
Relay 3 Alarm Acknowledge Received - pulsed when the unit is acknowledged.
Relay 4 Error
B1290: "Relay One On Timer is _ _ seconds"
YOU:  Not timed, uses the Relay Off Code
; (x = 1 to 199 )

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