87
E. PENDANT CONTROL MALFUNCTIONS
Introduction
There are four (4) electrical switches associated with the AD-464 Pendant assembly. These components are
interfaced to TB1 of Main Electrical Enclosure through two (2) disconnects and two (2) junction boxes.
The Pendant Assembly is remote control for Loading or Unloading the AD-464. The functions provided are:
• LOAD - LEVEL - UNLOAD
• TUMBLER (Basket) REVERSE
• TUMBLER (Basket) FORWARD
• EMERGENCY STOP (E-Stop)
The following information will provide a means to respond to “Pendant” malfunctions, and to verify
ALL
its
electrical signals. Refer to the following AD-464 Pendant associated wiring diagrams for detailed assembly and
wiring information.
• AD-464 PENDANT ASSEMBLY DIAGRAM
• AD-464 ANNUCIATOR, PENDANT, and UPPER RTD’S (Resistive Temperature Device) WIRING
DIAGRAM
1. Pendant Electrical Components
• Load - Level - Unload -A and B
• Tumbler (Basket) Reverse Switch - PB2
• Tumbler (Basket) Forward Switch -PB1
• EMERGENCY STOP (E-Stop) Switch - PB6
There are two (2) normally open electrical switches associated with this switch function, that are actuated by
a three (3) position selector.
SEL A = LOAD
SEL B = UNLOAD
Once this switch turned to “LOAD”, the dryer’s front doors will open, and depending upon system configuration,
will either tilt back or remain level.
• If the AD-464 was configured to Unload from the front: Any time this switch is turned to “UNLOAD,”
he dryer’s front doors will open, and its tumbler (basket) will tilt to the front.
• If the AD-464 was configured to Unload from the rear: Anytime this switch turned to “UNLOAD,”
nothing will happen
.
ALL
unloading functions will be transferred to the rear Control Panel.
• TUMBLER (Basket) REVERSE “PENDANT” - PB2
This push button comprises of one normally open switch, and is mechanically interlocked with the
Tumbler (Basket) Forward Push-button.