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Set the integral reset rate per TABLE 5. The integral reset feature corrects the output of the
UCM-420A to compensate for the offset inherent in proportional-only controllers. The integral reset
STEP
ramps the output in the direction that forces the input signal to exactly match the setpoint. The
A-6
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 "OFF."
Resets/Minute
Reset OFF
0.5 Resets/Minute
1 Resets/Minute
2 Resets/Minute
THIS CONCLUDES SET-UP OF THE UCM-420A AS A REMOTE SET-
POINT CONTROLLER. WIRE THE UCM-420A PER THE WIRING
DIAGRAM BELOW AND PER GENERAL WIRING DIAGRAMS.
WIRING THE UCM-420A AS A REMOTE SETPOINT CONTROLLER
UCM-420A
TIME
MUX
BASE
B3
B4
B5
ADDR
B6
B7
B8
0
0
0
0
0
0
2.65
1
5.2
0
0
1
2
0
0
1
0
1
0
0
1
0
12.85
3
25.6
0
1
1
4
0
1
1
1
0
0
1
X
X
.59-2.93
5
1
0
1
6
RESET
1
1
0
7
PER MIN
A4
A5
1
1
1
8
0
0
OFF
0.5
0
1
"1" MEANS
1
0
1
TURN SWITCH ON
2
1
1
SWITCH OFF
A3
REVERSE ACTING
A2
BOTH OFF >> REMOTE SETPT
LOCAL SETPT ENABLE
A1
SAMPLE AND HOLD MODE
REMOTE SETPT ENABLE
B1
BOTH OFF >> ANALOG
PWM REM SETPT SGLE UNIT
B2
REMOTE SETPOINT
PWM REM SETPT MUX MODE
*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.
1 2 3 4 5 6 7 8
A
PROP
A6
A7
A8
T.R.
0
0
0
10%
1 2 3 4 5 6 7 8
0
0
1
20%
B
0
1
0
35%
0
1
1
50%
1
0
0
65%
1
0
1
80%
STATUS
1
1
0
90%
1
1
1
100%
1
2
"0" MEANS
3
TURN SWITCH OFF
4
5
SWITCH ON
6
DIRECT ACTING
7
8
9
10
11
12
Set-Up Instructions (Cont.)
TABLE 5
Switch A4
OFF
OFF
ON
ON
CONTACT AT CONTROLLER*
24 VAC OR 24 VDC PWM SIGNAL FROM BAS
PWM
+
INPUT
(ONLY IF REMOTE SETPOINT IS PWM)
–
PWM
INPUT
REM SPT
+
4-20 MA OR 1-5 VOLT REMOTE SETPOINT SIGNAL
INPUT
LOC SPT
–
POT +
(ONLY IF REMOTE SETPOINT IS ANALOG SIGNAL)
LOC SPT
INPUT
LOC SPT
POT –
FEEDBK
+
INPUT
4-20 MA, 1-5 VOLT OR THERMISTOR INPUT SIGNAL
–
24 PWR
4-20 MA SOURCING OUTPUT SIGNAL TO
COMMON
–
+
CONTROLLED DEVICE
MA SIG
OUTPUT
+
24 VAC OR 24 VDC POWER
–
15
Switch A5
OFF
ON
OFF
ON
LED INDICATION
Steady Green - Power On
Dark
- Power Loss
Steady Red
- PWM Signal Present
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