1-22 Product Overview
1560D-UM051D-EN-P – February 2005
Functional Description (cont.) Bulletin 1560D • Basic Control – Standard Module
The Bulletin 1560D is intended for addition to an existing motor controller,
which provides circuit isolation, motor switching, and overload and
overcurrent protection. When wired as shown in Figure 1.22, the
controller operates as follows:
When a start is initiated in the existing motor controller and the contactor
(or breaker) closes, a contact must be supplied to tell the 1560D to start
also. A "CR" contact will apply control voltage to terminal 16 of the
Dialog Plus module.
When stopping the motor, the contactor in the existing controller will open,
removing power from the motor, and then the “CR” relay. The bypass
hold-in rung will keep the bypass contactor closed for a short time.
A separate contact may be used to select between two possible start
settings when using the “Dual Ramp” feature.
The “Aux 3” contacts on the Dialog Plus module should be programmed
for “Fault”, and wired into the existing controller to trip the main contactor
(or breaker) in the event of a fault condition sensed by the Dialog Plus
module.
If possible, it is better to have the Dialog Plus module control the main
contactor directly. In this case, the control circuit would look like, and
function like, the descriptions above for the Bulletin 1562D.
Bulletin 1560D • Basic control – Soft Stop or Pump Control
When wired as shown in Figure 1.23, the controller operates much the
same as described above for the Standard module. The control signal uses
terminal 15 instead of 16, and a “coast” stop can be achieved by opening
the connection to terminal 16.
It is more important in this configuration to integrate the control circuit of
the 1560D with the existing controller, for better control of the Soft Stop
(or Pump Stop). The “start signal” for this scheme cannot be a slave of the
main contactor, since it must remain closed to accomplish the option stop
maneuver. The Dialog Plus module can be used to control the main
contactor such that it will close when a start is initiated, and remain closed
until it has sensed the motor has stopped following an option stop
maneuver.
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