3. DESCRIPTION OF EACH MODULES
IMSRM02-E6
41
(5) Loop break alarm function
The loop break alarm function is used to detect a load (heater) break, a failure occurring in any
external operating device (magnet relay, etc.) or a failure occurring in the control system (control
loop) caused by an input (sensor) break.
(
See P. 88.)
The loop break alarm function is set by the dedicated operation panel, or host computer via
communication (setting for each channel).
This loop break alarm can be output independently for each channel by connecting the DO module.
For details on outputting loop break alarm, see
3.7 DO Module (P. 46)
,
and for details on
setting loop break alarm, see the
Operation Panel Instruction Manual (OPM:
IMSRM03-E
, OPL-A: IMSRM11-E
, OPM [Z-191 specifications]: IMSRM21-E
,
OPM-H [Z-191 specifications]: IMSRM26-E
)
,
and
the
Communication Instruction
Manual Supplementary Information Initialize Settings (Extended Communications)
(IMSRM07-E
)
.
(6) Heater break alarm function (Option)
The heater break alarm function is used to detect the current flowing into the load (heater) by using
the current transformer (CT), thereby producing a heater break alarm when a heater break occurs.
(
See P. 87.)
This function can be added only to the TIO-A, C, or D type module.(1 point/control loop)
For TIO module with voltage/current output, no heater break alarm function can be used.
(7) Control function
As standard, the TIO module employs the brilliant PID control method which can prevent overshoot
or disturbance. (
See P. 78.)
The selectable control action type differs depending on the TIO module type. (See the table below.)
Type
ON/OFF action
PID action with
autotuning
Heat/cool PID action
with autotuning
PID action with
autotuning
(With fuzzy control)
TIO-A
×
×
---
---
TIO-B
×
×
---
---
TIO-C
---
---
×
---
TIO-D
---
---
×
---
TIO-P
---
---
---
×
×
: Selectable
---: Not selectable
