Drivecon PWR MICRO PWRM212D, Owner'S Manual

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- Only certified maintenance personnel should attempt a repair more involved than
the swapping of printed circuit boards. Improper repair can compromise the built-
in safety features and cause unexpected operation and damage.
- This product uses two AA alkaline batteries. When replacing batteries, both must
be replaced at the same time.
- DRIVECON does not recommend use of nickel-cadmium or nickel-metal-hydride
batteries due to voltage characteristics that cause a sudden loss of power when
discharged. They also have less capacity than alkaline batteries and therefore will
not last as long.
4.0 Trouble Shooting Common Mistakes In Installation:
Receiver dead: Is 120 volt AC applied between X1 and X2 wires? On the
PWRM21 models these are the BLACK and BROWN wires; and on the
PWRM24 models they are wires 1 and 2. You must provide both the hot and the
neutral sides of the control transformer secondary to power the unit.
Does the equipment have a mainline contactor : Not all equipment has a
mainline contactor. The best way to determine if your equipment has a mainline
contactor is to check whether there is a START and STOP on the corded pendant.
If the equipment does not have a mainline contactor then these wires do not have
to be connected. On the PWRM21 models this wire is the MAIN wire and on the
PWRM24 models this is MAIN-IN (3) and MAIN-OUT (4). The MAIN wire on
the PWRM21 models will be hot when mainline is on; this wire has to be
terminated with a wire nut or isolated.
Relays close but there is no movement from the crane: Are the COMMON
wires hooked up properly? The receivers have “dry” contacts. Even though X1
and X2 have been applied to power the receiver, you still need to apply power to
the common side of the relay contacts in order to get power to your contactors.
On the PWRM21 models the COM wire on the diagram is separate from the
power wires and on the PWRM24 models each COM wire is completely isolated
from the others as well as the power wires. In most cranes, the COM wires will
be connected to the X1 supply.
If you have any problems or questions not covered above, please call DRIVECON at 1-800-374-
8266.