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FIG. 10 — ML7984 WIRING WITH SERIES 90 MECHANICAL 135! (SLIDEWIRE) CONTROLLERS
MODULATING
SINGLE
LIMIT
2 ML7984
SOURCE
6
B
R
W
R
W
2 ML7984
B
R
W
2 ML7984
B
R
W
FIG. 10A — ML7984 WIRING WITH COMMON
TRANSFORMER, INDIVIDUAL CONTROLLERS
FUNCTION
DIP SWITCH CONFIGURATION
1001
Mechanical Series 90
Direct Acting
1011
Mechanical Series 90
Reverse Acting
For Figures 10A and 10B the following apply:
Power supply provides overload protection and disconnect means.
1
Allow up to 0.5 amps for each device. Actuators and controller can share same transformer providing the VA rating of the
2
transformer is not exceeded and proper phasing is observed. Do not mix a.c. and d.c. power sources.
Do not mix M984/6 or Modutrol Motors with the ML7984 in the same circuitry.
3
Use configuration DIP switches to select device functions: Direct acting function (actuator stem moves upwards with
4
signal increase) or Reverse acting function (actuator stem moves downwards with signal increase).
Turn power off before setting the DIP switches. For common transformer and common controller application, please consult
5
the factory.
For Figure 10A Only: Maximum resistance per control circuit of 280 !.
6
For Figure 10B Only: Use Resistor Kit part #272822.
7
3
B
R
T6
W
T5
3
B
R
T6
24 Vac
W
T5
3
T6
B
T5
R
T6
W
T5
4
1
2
3
4
1
2
3
SINGLE
SOURCE
B
R
7
1
W
L1
L2
OR
28 Vdc
FIG. 10B — ML7984 WITH INDIVIDUAL
TRANSFORMERS, COMMON CONTROLLER
On (1)
ACTUATORS
Off (0)
4
5
On (1)
Off (0)
7
2 ML7984
3
B
R
T6
W
T5
2 ML7984
3
B
R
T6
W
T5
2 ML7984
3
B
R
T6
W
T5
RESISTOR SELECTION CHART
NO. OF
RESISTOR
VALUE
1
RESISTOR NOT REQ'D.
2
133 OHM
3
68.1 OHM
4
45.3 OHM
1
L1
24 Vac
L2
OR
2
T6
28 Vdc
1
T5
L1
24 Vac
L2
OR
2
T6
28 Vdc
T5
1
L1
24 Vac
L2
OR
2
T6
28 Vdc
T5
7
ALL RESISTORS
1/4 WATT
1% METAL FILM
95C-10939-4
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