5.8.2
Procedure
To reset to factory defaults, reset calibration data only or reset analog outputs only, follow the Reset
Analyzer flow diagram (
Figure 5-5
).
5.9
Programming Alarm Relays
5.9.1
Purpose
The Model 1057 24 Vdc (02 order code) and the AC switching power supply (03 order code) provide
four alarm relays for process measurement or temperature. Each alarm can be configured as a fault
alarm instead of a process alarm. Also, each relay can be programmed independently and each can be
programmed as an interval timer. This section describes how to configure alarm relays, simulate relay
activation, and synchronize timers for the four alarm relays. This section provides details to program
the following alarm features:
Figure 5-5 Resetting Factory Default Settings
Section Alarm Relay Feature Default
Description
5.9.2
Enter setpoint
100.0uS/cm Enter alarm trigger value
5.9.3
Assign measurement
S1 Measure
Select alarm assignment
5.9.4
Set relay logic High
Program relay to activate at High or Low reading
5.9.5
Deadband
0.00uS/cm
Program the change in process value after the relay deactivates
5.9.6
USP safety
0%
i
Program percentage of the limit to activate the alarm
5.9.7
Normal state
Open
Program relay default condition as open or closed for failsafe operation
5.9.8
Interval time
24.0 hr
Time in hours between relay activations
5.9.9
On-Time
10 min
Enter the time in seconds that the relay is activated.
5.9.10
Recover time
60 sec
Enter time after the relay deactivation for process recovery
5.9.11
Hold while active S1
Holds current outputs during relay activation
5.9.12
Simulate
Manually simulate alarms to confirm relay operation
5.9.13
Synchronize timers Yes
Control the timing of two or more relay timers set as Interval timers
Section 5: Programming the Analyzer - Basics
26
Instruction Manual
LIQ-MAN-1057
Section 5: Programming the Analyzer - Basics
April 2017
Table 5-2 Programming alarm relays
