Motor Control Board - Graco Reactor H-25 Series Repair And Parts Manual

Motor Control Board

NOTE: Motor control board has one red LED (D11).
Power must be on to check. See F
Function is:
• Startup: 1 blink for 60 Hz, 2 blinks for 50 Hz.
• Motor running: LED on.
• Motor not running: LED off.
• Diagnostic code (motor not running): LED blinks
diagnostic code, pauses, then repeats (for example,
E21=21 blinks, pause, 21 blinks).
NOTICE
Before handling board, put on a static conductive
wrist strap to protect against static discharge which
can damage board. Follow instructions provided
with wrist strap.
1. Turn main power OFF
supply.
2. Relieve the pressure. See Pressure Relief
Procedure, page 26.
3. Refer to electrical diagrams. Motor control board is
on right side inside cabinet.
4. Put on static conductive wrist strap.
5. Disconnect all cables and connectors from board.
6. Remove nuts (40) and take entire motor control
assembly to workbench.
7. Remove screws and take board off heatsink.
8. Set DIP switch (SW2) on new board. See T
for factory settings. See F
To prevent overpressurization, DIP switch 2 must be
set to ON for Model H-25.
312063Z
. 5 for location.
IG
. Disconnect power
4
ABLE
. 5 for location on board.
IG
Table 4: DIP Switch (SW2) Settings
DIP
Switch ON (up)
Switch 1 Motor soft start ON
(factory default)
Switch 2 ON for pressure
imbalance alarm
(factory default)
Switch 3 Standby ON
Switch 4 ON for Models H-25
and H-40
(system dependent)
9. Install new board in reverse order. Apply thermal
heatsink compound to mating surfaces of board and
heatsink.
NOTE: Order Part 110009 Thermal Compound.
Table 5: Motor Control Board Connectors
Connector Pin
J1 n/a
J3 n/a
J4 n/a
J7 n/a
J8 n/a
J9 n/a
J10 n/a
J12 n/a
J13 n/a
J14 n/a
J18 1
2
3
4
5
J5 1
2
3
4
OFF (down)
Motor soft start
OFF
(Not applicable to
3-phase motors)
OFF for pressure
imbalance warning
Standby OFF
(factory default)
OFF for Models
H-XP2 and H-XP3
(system
dependent)
Description
Main power
Transducer A
Not used
Not used
Transducer B
Motor thermostat (NC)
Not used
Data reporting
To display board
Motor power
Directional valve, A+
Directional valve, A-
Directional valve, B+
Directional valve, B-
GND
Unused (VDD)
Pumpline reversing switch
(COM)
Pumpline reversing switch
(NC)
Pumpline reversing switch
(NO)
Repair
31