LOC SPT POT +
LOC SPT INPUT
LOC SPT POT –
THREE-WIRE POTENTIOMETER
(5K
W
TO 50 K
W
)
LOCAL SETPOINT
(FACTORY INSTALLED
ON BASIC MODEL)
INCREASE SETPONT
LOC SPT POT +
LOC SPT INPUT
LOC SPT POT –
TWO-WIRE POTENTIOMETER
LOCAL SETPOINT
("XA OPTION ON
PRECON THERMISTOR)
INCREASE
SETPONT
LOC SPT POT +
LOC SPT INPUT
LOC SPT POT –
4-20 MA OR 1-5 VOLT
LOCAL SETPOINT
+
–
COMMON
COMMON
PWM
INPUT
PWM
INPUT
REM SPT
INPUT
LOC SPT
POT +
LOC SPT
INPUT
LOC SPT
POT –
COMMON
MA SIG
OUTPUT
1
2
3
4
5
6
7
8
9
10
11
12
B3
0
0
0
0
1
1
1
1
B6
0
0
0
0
1
B7
0
0
1
1
X
B8
0
1
0
1
X
B4
0
0
1
1
0
0
1
1
B5
0
1
0
1
0
1
0
1
MUX
ADDR
1
2
3
4
5
6
7
8
A6
0
0
0
0
1
1
1
1
A7
0
0
1
1
0
0
1
1
A8
0
1
0
1
0
1
0
1
PROP
T.R.
10%
20%
35%
50%
65%
80%
90%
100%
UCM-420A
TIME
BASE
2.65
5.2
12.85
25.6
.59-2.93
A4
0
0
1
1
A5
0
1
0
1
RESET
PER MIN
OFF
0.5
1
2
"1" MEANS
TURN SWITCH ON
"0" MEANS
TURN SWITCH OFF
LOCAL
SETPOINT
FEEDBACK
REMOTE
SETPOINT
STATUS
B
A
24 VAC OR 24 VDC POWER
4-20 MA, 1-5 VOLT OR THERMISTOR INPUT SIGNAL
4-20 MA SOURCING OUTPUT SIGNAL TO
CONTROLLED DEVICE
4-20 MA OR 1-5 VOLT REMOTE SETPOINT SIGNAL
(ONLY IF REMOTE SETPOINT IS ANALOG SIGNAL)
24 VAC OR 24 VDC PWM SIGNAL FROM BAS
(ONLY IF REMOTE SETPOINT IS PWM)
CONTACT AT CONTROLLER*
+
–
+
–
+
–
+
–
SEE
LOCAL
SETPOINT
WIRING
OPTIONS
–
+
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
FEEDBK
INPUT
24 PWR
SWITCH OFF
SWITCH ON
A3
A2
A1
B1
B2
REVERSE ACTING
BOTH OFF >> REMOTE SETPT
SAMPLE AND HOLD MODE
BOTH OFF >> ANALOG
REMOTE SETPOINT
DIRECT ACTING
LOCAL SETPT ENABLE
REMOTE SETPT ENABLE
PWM REM SETPT SGLE UNIT
PWM REM SETPT MUX MODE
WIRING DIAGRAM - UCM-420A AS A REMOTE SETPOINT CONTROLLER WITH LOCAL ADJUSTMENT
21
LOCAL SETPOINT WIRING OPTIONS
Set-Up Instructions (Cont.)
*NOTE: PWM contact at controller may
switch either positive or negative leg of
circuit, and PWM circuit may use the
same power supply as the UCM-420A
or a separate power supply. See the
General Wiring Diagram Section for
detailed wiring.
Steady Green - Power On
Dark
- Power Loss
Steady Red
- PWM Signal Present
LED INDICATION
