Pepperl+Fuchs 1/209 Handbuch Seite 78

Trip Amplifier 1/209
Software Description
4.4.1.12 Trip Low on Setpoint
This command is used to monitor a low alarm. You can monitor inputs or computed
values.
Call
Formula
Example
• high contact = 60 %
• hysteresis = 3 %
• alarm < 60 %
• no alarm > 63 %
The hysteresis is also set in engineering units (0.1 % to 100 %).
4.4.1.13 Trip 2 of 3 Selector
Call
Formula
Example
SEL,E01,E02,E03,K01,K02,X01,X02,X03,X04
Normal operation
• signal alarm = -1
• channel alarm = -1
• average = (E1 + E2 + E3) / 3
• faulty channel = 0
Single fault
• signal alarm = 1
• channel alarm = -1
• average = (Ex + Ey) / 2
• faulty channel = E1 or E2 or E3
78
ALS,op1,op2,op3,op4 (Alarm Low on Setpoint)
ALS = alarm low contact exactly on setpoint
op1 = value to be monitored (e. g. AE1 ... AE4)
op2 = trip point
op3 = hysteresis
op4 = result
op4 = 1 for alarms or if op4 was 1 before
op4 = 0 while inside deadband or if op4 was 0 before
op4 = -1when there is no alarm
SEL,op1,op2,op3,op4,op5,op6,op7,op8,op9
SEL = select the deviating channel
op1 = input 1
op2 = input 2
op3 = input 3
op4 = tolerance band
op5 = tolerance band hysteresis
op6 = signal alarm -1, 0, 1 (channels are deviates)
op7 = channel alarm -1, 0, 1(channels are different)
op8 = average of acceptable inputs
op9 = faulty channel (0, 1, 2, 3, 123)
op5 and op6 show:
op4= 1 for alarms or if op. was 1 before
op4 = 0 while inside deadband or if op. was 0 before
op4 = -1 when there is no alarm