1
GPSL100 Meanwell Power Supply Conversion
Use the following instructions to change the unvented power supply to a Meanwell power
supply.
Verify that you have the wires and screws that you need in the package containing the
Meanwell power supply. You should have four Philips head screws with flat washers,
one green, white, and black wire for AC, and one short black and red wire for DC. If you
have a slide gate, the short red and black wires for DC will be unused.
Verify that the selector switch on the Meanwell power supply is set for 115 VAC.
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Turn the power switch off on the operator.
Turn the AC power OFF at the circuit breaker.
Disconnect the red wire from the battery that goes to the motor drive board.
Cut the red and black DC wires that go to the motor drive board from the unvented power
supply as close to the power supply as you can.
3
Cut the Ty-wraps from the bundle of wires in order to free the white, black, and green
AC wires that go from the unvented power supply to the junction box.
Loosen the wire connector on the junction box.
Disconnect the black AC wire coming from the unvented power supply from the power
switch.
4
Disconnect the white AC wire from the unvented power supply inside the junction box.
Disconnect the green ground wire from the unvented power supply inside the junction
box.
Pull the white and green AC wires coming from the unvented power supply from the
junction box.
Unscrew the bolts connecting the unvented power supply using a 3 mm hex key and
remove the unvented power supply.
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Install the Meanwell power supply using the Philips head screws provided.
Connect the black DC wire that you previously cut off the unvented power supply that
comes from the motor drive board to the V- terminal on the Meanwell power supply.
Connect the red DC wire that you previously cut off the unvented power supply that
comes from the motor drive board to the V+ terminal on the Meanwell power supply.
Connect the green, white, and black AC wires provided with the Meanwell power supply
to the AC terminals on the Meanwell power supply. Connect green to ground, white to
N, and black to L.
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Tape or ty-wrap the green, white, and black AC wires coming from the Meanwell power
supply together.
Route the AC wires from the Meanwell power supply over the top of the motor.
Connect the black wire AC wire from the Meanwell power supply to the power switch.
Use caution when connecting the wire to the spade terminal. Be careful not to damage
the power switch by using too much force.
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Run the white and green AC wires through the wire connector into the junction box,
tighten the wire connector and cut the wires to fit.
Connect the green ground wire coming from the Meanwell power supply to the green
ground wires in the junction box.
Connect the white AC wire coming from the Meanwell power supply to the white AC
wires in the junction box.
Make sure that the black AC wires in the junction box still have a good connection.
8
Replace the cover on the junction box and the Meanwell terminals
Check the battery voltage to ensure that you have over 10 VDC in each battery. If the
battery voltage on each battery is lower than 10 VDC, you will need to recharge them on
a trickle charger at 12 VDC 2 amps.
Reconnect the red DC wire from the motor drive board to the positive battery post that
you previously disconnected.
9
Restore AC power and turn the power switch on.
Check the DC output of the power supply at the two screw terminals near the 15 amp
fuse on the motor drive board to ensure the power supply voltage is between 27.5 to 28.3
VDC.
If the DC voltage output of the power supply is not between 27.5 and 28.3, then use the
adjustment screw and a Philips head screw driver on the front of the Meanwell power
supply to adjust the DC voltage output within range.
Return to normal operations.