Issue 2, Nov-98. Applies to software versions 1.3 & 1.4
-2-
HA026270
Typical Wiring Diagram
OPERATION
Switch on the controller. Following a 3 second self-test sequence,
you will see the display shown below. It is called the HOME
display.
OP1 illuminates when the logic output is ON (normally heating).
OP2 illuminates when the relay output is ON (normally cooling or
alarm).
If OP1 or OP2 are configured as alarm outputs (instead of heating
and cooling), they will flash when a new ‘unacknowledged’ alarm
occurs and go steady when the alarm is acknowledged but still true.
T
O
A
CKNOWLEDGE A
N
EW
A
LARM
Press
and
together. This will also reset any latched alarms
that are no longer true.
A
LARM
M
ESSAGES
If an alarm occurs a message will be flashed in the display. This
alternates with the measured temperature as shown below:
All of the possible messages are shown in this table.
Possible messages
Alarm - Full Scale High
Alarm - Full Scale Low
Alarm - Deviation
Alarm - Deviation High
Alarm - Deviation Low
Sensor Break
Loop Break
Load Fail
End of Timing
In place of the dash the alarm number is shown -
Alarm 1 or 2 or 3.
T
O
A
DJUST
T
HE
R
EQUIRED
T
EMPERATURE
(S
ETPOINT
)
Press and release quickly the
or
button. The setpoint
will be displayed for 2 seconds.
T
O
V
IEW
T
HE
D
ISPLAY
U
NITS
Press and release quickly the
or
button. The display
units will be flashed for 0.5 sec.
If you get lost, pressing
and
together will always return
you to the HOME display.
If, at any time, no key is pressed within 45 seconds, the display
will always return to the HOME display.
Display Units
Deg Centigrade
Deg Fahrenheit
Deg Kelvin
Linear inputs - no
units displayed
0.5 sec
or
Alarm 1 Full Scale Low
Actual temperature
Press and hold
to raise the setpoint
Press and hold
to lower the setpoint
*
When switching inductive loads
such as contactors or solenoid valves,
wire the 22nF/100
Ω
‘snubber’
supplied across relay terminals AA &
AB. This will prolong contact life and
reduce interference.
WARNING
Snubbers pass 0.6mA at 110V and
1.2mA at 230Vac, which may be
sufficient to hold on high impedance
loads. Do not use in these
installations.
Relay output fuse
2A type T
Neutral
Controller fuse
2A type T
Heater fuse
Heater
Thermocouple
Solid State
Relay
(e.g. TE10)
Snubber*
Line
+
-
Model 2132
AB
V+
1B
V-
1A
AA
L
N
+
-
Cooling or
alarm relay
Output 1
OP1
OP2
Output 2
Actual Temperature
(or Process Value ‘PV’)
2 sec
Required temperature
(Setpoint)
Actual temperature
