Red Lion TCU - Manual (Page 51)

Configure Module 4 - Alarms (4-AL)
Unit returns to configuration access point if alarm(s) are not installed.
Display Parameter
Range and Units
(Factory Setting
Value)
Description/
Comments
Act1 Alarm 1 operation
mode A-HI - absolute high
A-LO - absolute low
d-HI - deviation high
d-LO - deviation low
b-IN - band inside
b-ot - band outside
HCur - heater
break alarm
Valv - valve fail
alarm
A2HI - absolute
high, second
input
A2LO - absolute
low, second input
d2HI - deviation
high, second
input, cascade
d2LO - deviation
low, second
input, cascade
b2IN - band in,
second input,
cascade
b2Ot - band out,
second input,
cascade
(A-HI)
If changed, check
alarm values.
rSt1 Alarm 1 reset mode Auto - automatic
LAtc - manual reset
(Auto) Manual reset via
hidden mode
Stb1 Alarm 1 standby
function (delay) yes/no
(no) Power-up standby
delay.
AL-1 Alarm 1 value -999 to 9999
1 or 0.1 degree
(0) If band alarm
action, then only a
positive value can
be entered.
Display Parameter
Range and Units
(Factory Setting
Value)
Description/
Comments
Act2 Alarm 2 operation
mode A-HI - absolute high
A-LO - absolute low
d-HI - deviation high
d-LO - deviation low
b-IN - band inside
b-ot - band outside
HCur - heater break
alarm
A2HI - absolute high,
second input
A2LO - absolute low,
second input
d2HI - deviation high,
second input,
cascade
d2LO - deviation low,
second input,
cascade
b2IN - band in,
second input,
cascade
b2Ot - band out,
second input,
cascade
(A-HI)
If changed, check
alarm values.
rSt2 Alarm 2 reset mode Auto - automatic
LAtc - manual reset
(Auto)
Manual reset via
hidden mode.
Stb2 Alarm 2 standby
function (delay) yes/no
(no) Power-up standby
delay.
AL-2 Alarm 2 value -999 to 9999
1 or 0.1 degree
(0) If band alarm
action, then only a
positive value can
be entered.
AHYS Alarm Hysteresis
value 1 to 250
1 or 0.1 degree
(1) Applies to both
alarms. Set to
eliminate chatter.
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