Resets/Minute
Switch A4
Switch A5
Reset OFF
OFF
OFF
0.5 Resets/Minute
OFF
ON
1 Reset/Minute
ON
OFF
2 Resets/Minute
ON
ON
25
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
24 VAC OR 24 VDC POWER
4-20 MA, 1-5 VOLTS OR THERMISTOR INPUT SIGNAL
4-20 MA SOURCING OUTPUT SIGNAL TO
CONTROLLED DEVICE
24 VAC OR 24 VDC PWM SIGNAL FROM BAS
(ONLY IF REMOTE SETPOINT IS PWM)
CONTACT AT CONTROLLER*
+
–
–
+
+
–
+
–
SEE
LOCAL
SETPOINT
WIRING
OPTIONS
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
B
A
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Steady Green
- Power On
Dark
- Power Loss
Steady Red
- PWM Signal Present
Slow Green Blink
- Attention Mode, No PWM Signal
Slow Red/Green Blink - Attention Mode, PWM Signal Present
Rapid Green Blink
- Select Mode, No PWM Signal
Rapid Red/Green Blink - Select Mode, PWM Signal Present
LED INDICATION
Set-Up Instructions (Cont.)
Set the integral reset rate per TABLE 22. The integral reset feature corrects the output of the
UCM-420A to compensate for the offset inherent in proportional controllers. The integral reset
ramps the output in the direction that forces the input signal to exactly match the setpoint. The
number of times per minute this offset is overcome by the output signal is the integral reset rate. If
the output of the UCM-420A is used for digital control, set the integral reset rate “OFF.”
STEP
D-8
TABLE 22
THIS CONCLUDES SET-UP OF THE UCM-420A AS AN OUTPUT EXPANDER
(MUX OPERATION). WIRE THE UCM-420A PER THE WIRING DIAGRAM
BELOW AND PER GENERAL WIRING DIAGRAMS.
*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.
WIRING OF THE UCM-420 AS AN OUTPUT EXPANDER (MUX OPERATIONS)
