User manual - ATR244 - 41
GRUPPO H - 
AL. 2
 - Alarm 2
141 
AL.2. f.
  Alarm 2 Function
Alarm 2 selection.
diS a b.
  Disabled (Default)
A b . u p. A .
  Absolute Upper Activation. Absolute referred to the process, active over
Ab.Lo.a.
  Absolute Lower Activation. Absolute referred to the process, active under
bAnd
  Band alarm (command setpoint ± alarm setpoint)
u p. d e v.
  Upper Deviation alarm
L o . d e v.
  Lower Deviation alarm
Ab.c.u.A.
 Absolute Command Upper Activation. Absolute alarm referred to the command 
setpoint, active over
A b.c.L. A.
 Absolute Command Lower Activation. Absolute alarm referred to the command 
setpoint, active under
run
  Status alarm (active in RUN/START)
cooL
  Cold actuator auxiliary (Cold action in double loop)
P r b . e r.
  Probe error. Alarm active in case of sensor ropture.
t M r.1
  Related to timer 1
t M r. 2
  Related to timer 2
t M r.1.2
  Related to both timers
rEM.
  Remote. The alarm is enabled by the word 1236
d.i.  1
  Digital Input 1. Active when digital input 1 is active.
d.i.  2
  Digital Input 2. Active when digital input 2 is active.
d.i.  3
  Digital Input 3. Active when digital input 3 is active.
d.i.  4
  Digital Input 4. Active when digital input 4 is active.
H.b.A.
  Heater Break Alarm and Overcurrent Alarm
142 
A.2.Pr.
  Alarm 2 Process (only on ATR-ABC-T)
Selects the size related to alarm 2.
A.i n .1
  Value read on input AI1. (Default)
A.i n . 2
  Value read on input AI2.
MEAn
  Arithmetic average of the value read on inputs AI1 and AI2 [(AI1+AI2)/2].
d i F F.
  Difference of the values read on inputs AI1 and AI2 (AI1-AI2).
A b . d i f.
  Module of the difference of the values read on inputs AI1 and AI2(|AI1-AI2|).
SuM
   Sum of values read on inputs AI1 and AI (AI1+AI2).
143 
A.2. r. c.
  Alarm 2 Reference Command
Selects alarm 2 reference command
cmd. 1
  Alarm referred to command 1. (Default)
cmd. 2
  Alarm referred to command 2.
144 
A.2.5. o .
  Alarm 2 State Output
Alarm 2 output contact and intervention type.
n.o. S t.
  (N.O. Start) Normally open, active at start (Default)
n.c. S t.
  (N.C. Start) Normally closed, active at start
n.o. tH.
  (N.O. Threshold) Normally open, active on reaching alarm
2 p. 65
n.c. t H.
  (N.C. Threshold) Normally closed, active on reaching alarm
2 p. 65
145 
rEs .
 Reserved
Reserved parameter.
146 
a.2.Hy.
  Alarm 2 Hysteresis
Alarm 2 hysteresis
-9999..+9999 [digit
1 p. 65
] (degrees for temp. sensors). Default 0.5.