Motor Control Board - Graco Reactor E-20 Series Manual

Motor Control Board

Motor control board has one red LED (D11). Power
must be on to check. See F
tion 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).
CAUTION
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.
Wait 5 minutes for stored voltage to discharge (E-30
and E-XP2 models only).
2. Relieve pressure, 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.
312066ZAD
. 2 for location. Func-
IG
. Disconnect power
8. Set DIP switch (SW2) on new board. See T
for factory settings. See F
Table 3: DIP Switch (SW2) Settings
DIP
Switch
Switch 1
Switch 2 ON for E-20 and
E-30 models
Switch 3 ON to enable
pressure imbalance
alarm
Switch 4
9. Install new board in reverse order. Apply thermal
heatsink compound to mating surfaces of board and
heatsink.
Order Part 110009 Thermal Compound.
Table 4: Motor Control Board Connectors
Model Model
E-20 E-30
and and
E-XP1 E-XP2 Pin
J1 N, L n/a
J8 J3 n/a
J4 J1 n/a
J7 J6 1, 2
3
J3 J5 n/a
J10 J7 1-4
5, 6
7-10
J12 J12 n/a
J13 J13 n/a
ABLE
. 2 for location on board.
IG
Switch Position
not used
OFF for E-XP1 and
E-XP2
OFF to enable
pressure imbalance
warning
not used
Description
Main motor power
Transducer B
Motor output
Motor thermal overload signal
Brush wear signal
Transducer A
Not used
Cycle switch signal
Jumper 15C866 (available in
repair kit 246961)
Data reporting
To display board
Repair
3
37