
Temperature Controller iB6 / iB12
© Copyright Mastip Technology Limited. Information subject to alteration. V1.02 www.mastip.com
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Priority Code Condition Controller
Response
How Alarm Is Cleared
1 OVt Internal over-
temperature
All outputs off Turn off controller; make sure
fan and vents are not blocked;
wait for controller to cool; turn
on controller; if error recurs,
contact technical support
2 ER1
or
ER2
Problem with
controller’s internal
operation
All outputs off Cycle power to controller;
if error recurs, contact the
Mastip technical support at
local distributor
3 TCr Reversed thermocouple
detected
Zone goes to
configured failsafe
state
Use
button to put the zone
in Idle as described in 3.4.3,
and then after problem is fixed,
put zone in Normal (closed
loop) or Manual (open loop)
mode
4 SAF High-temperature
safety limit exceeded
(configured in Superv.
Config menu; default is
feature disabled)
Zone output off if
feature is enabled
5 TCo Open thermocouple
detected
Zone goes to
configured failsafe
state (configured
in Superv. Config
menu)
6 LPB Loop break detected Zone output off
7 HID High deviation alarm Zone output off Clears automatically when
alarm condition clears
8 LOD Low deviation alarm Zone output on
9 Tu0
Tu3
Tu5
Tu8
Tu9
Autotuning error Zone output off
Use
button to put the zone
in Idle as described in 3.4.3,
and then after problem is fixed,
try tuning again
For more information about
tuning and Autotuning errors,
see Section 6.
4.5 Alarm Priorities
If a zone has more than one alarm condition, the code for the highest-priority alarm is displayed.
Alarm priorities are in the table below.
4.0 Alarms & Alarm Indication
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