6
LOCAL SETPOINT WIRING (DIAGRAMS 6-9)
PWM
INPUT
PWM
INPUT
REM SPT
INPUT
LOC SPT
POT +
LOC SPT
INPUT
LOC SPT
POT –
COMMON
MA SIG
OUTPUT
1-5 VDC
LOCAL
SETPOINT
SIGNAL
+
–
FEEDBK
INPUT
24V PWR
1
2
11
12
JUMPER
POSITION
NUMBER
JUMPER
PINS
7
8
9
10
3
4
5
6
PWM
INPUT
PWM
INPUT
REM SPT
INPUT
LOC SPT
POT +
LOC SPT
INPUT
LOC SPT
POT –
COMMON
MA SIG
OUTPUT
4-20 MA
LOCAL
SETPOINT
SIGNAL
+
–
FEEDBK
INPUT
24V PWR
1
2
11
12
JUMPER
POSITION
NUMBER
JUMPER
PINS
7
8
9
10
3
4
5
6
PWM
INPUT
PWM
INPUT
REM SPT
INPUT
LOC SPT
POT +
LOC SPT
INPUT
LOC SPT
POT –
COMMON
MA SIG
OUTPUT
INCREASE SETPOINT
FEEDBK
INPUT
24V PWR
PRECON TWO-WIRE
POTENTIOMETER
("XA" OPTION ON
TEMPERATURE SENSOR)
1
2
11
12
JUMPER
POSITION
NUMBER
JUMPER
PINS
7
8
9
10
3
4
5
6
PWM
INPUT
PWM
INPUT
REM SPT
INPUT
LOC SPT
POT +
LOC SPT
INPUT
LOC SPT
POT –
COMMON
MA SIG
OUTPUT
INCREASE SETPOINT
*WHEN A THREE-WIRE POTENTIOMETER
IS USED, JUMPER PLUGS MUST BE LEFT
OFF POSITIONS 3, 4, 5 AND 6.
FEEDBK
INPUT
24V PWR
THREE-WIRE
POTENTIOMETER
5 K
W
TO 50 K
W
MAXIMUM
RESISTANCE
RED
GREEN
BLACK
1
2
11
12
JUMPER
POSITION
NUMBER
JUMPER
PINS
7
8
9
10
3
4
5
6
GENERAL WIRING DIAGRAM 6 - Using a three-wire potentiometer for local setpoint. (The UCM-420A
is shipped with a three-wire potentiometer mounted and wired per this diagram.)
GENERAL WIRING DIAGRAM 7 - Using a PreCon two-wire potentiometer ("XA" option on a tempera-
ture sensor) for local setpoint.
GENERAL WIRING DIAGRAMS 8 & 9 - Using an analog (4-20 mA or 1-5 VDC) signal for local setpoint.
Analog signals are normally used as remote setpoints. However, the UCM-420A may be configured to
accept an analog signal for a local setpoint if this is required.
GENERAL WIRING DIAGRAM 8 -
4-20 mA local setpoint
GENERAL WIRING DIAGRAM 9 -
1-5 VDC local setpoint
General Wiring
Diagrams (Cont.)