Pixsys ATR 902 - Band Alarm; Deviation Alarms; Independent Setpoint Alarm

User manual - ATR902 - 27
11.b Band alarm (setpoint-process)
Time
Hysteresis
Hysteresis
OFF
PROCESS
SETPOINT
Comparison value
(Par. 25)
Alarm can be:
• Active outside
• Active inside
In the gure it is active outside.
11.c Deviation alarms
Time
Hysteresis
OFF
ON
OUT
PROCESS
SETPOINT
Comparison value
(Par. 25)
Alarm can be:
• Upper deviation
• Lower deviation
In the gure it is upper deviation.
11.d Independent alarm reerring to the setpoint
Time
Hysteresis
OFF
ON
OUT
SETPOINT
Comparison value
(Par. 25)
Alarm can be:
• Active over
• Active under
In the gure it is active on.
Each intervention can be related to
a cycle lock and/or to an acoustic
signalling.