SPYDER® LON PROGRAMMABLE, VAV/UNITARY CONTROLLERS
17
63-2685—03
Fig. 20. Controller wiring diagram (model PUL6438S shown) for typical PWM reheat and PWM peripheral heat valve
actuator. (For note 2, refer to Fig. 15.)
NOTE: Make sure to set the Configuration DIP Switch as
shown in Fig. 20. Switches 1 through 3 set the timing
of the ML7984B valve actuator to match the controller
outputs (0.1 second minimum with a maximum time of
25.6 seconds). Switch 4 determines the action of the
actuator (Off = Direct Acting, On = Reverse Acting).
1 2 3 4
3
ON
OFF
ML7984B
CONFIGURATION
DIP SWITCHES
(LOCATED ADJACENT
TO THE INPUT
TERMINAL BLOCK)
1
2
1
2
EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP
TO 14 AWG (2.O MM
2
) WITH A MINIMUM OF 18 AWG (1.O MM
2
), FOR EARTH GROUND WIRE.
TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.
TURN POWER OFF BEFORE SETTING THE DIP SWITCHES.
MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN: REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT
MALFUNCTION.
M23573B
24 VAC
24 VAC
COM
+
-
DO-1
DO-2
DO-3
3
4
4
24 VAC COM
2
2
24 (H)
24 (N)
PWM (H 24 V
A
C)
PWM OUTPUT
FROM CNTRL
PWM VALVE ACTUATOR
ML7984B
T6 T5 C B W R
REHEAT
VALVE ACTUATOR
24 (H)
24 (N)
PWM (H 24 V
A
C)
PWM OUTPUT
FROM CNTRL
PWM VALVE ACTUATOR
T6 T5 C B W R
PERIPHERAL HEAT
VALVE ACTUATOR
24 VAC
4
4
AO-1 COM AO-2 AO-3 COM
UI-1 COM UI-2 UI-3 COM UI-4 UI-5 COM UI-6
DI-1 DI-2 COM DI-3
20V DC
DI-4
NET
-2
NET
-1
SHLD
EGND
24 V
AC
24V
AC COM
DO-1
COM
DO-2
DO-3 DO-4
DO-5
COM
DO-6 COM
1 2 3 4 5 6 7 8
1
0
9
2 3 4 5 6 7 8 0
9
1
1 1 1 1 1 1 1 1 2
1
1 2 3 4 5 6 7 8 0
9
2
2 2 2 2 2 2 2 2 3
3
1 2 3 4 5 6 7 8 0
9
3
3 3
3 3
3 3
3 4
DO-7 DO-8 COM
SBUS1 SBUS2
