37
Selection of the supply voltage
The maximum load capacity is dependant on the selected voltage
supply.
Max. load capacity with 15V internal supply:300 mA
Max. load capacity with 24 V internal supply:170 mA
Max. load capacity with an external 24V supply 1 A (dependent on the
external voltage source)
The speci ed currents are reduced by any current drawn on the second
interface X3B.
15 V
24 V or external
supply via the control
control card
For maximum noise immunity, the encoder cable shall consist of individually
shielded twisted pairs with one overall shield. The individual shields
should be connected to 0V (com) pin 8 on the X3A terminal strip and be
kept electrically isolated from the outer shield. The outer shield should be
connected to earth ground on the elevator drive.
The cable shall be kept a minimum of 8 inches (20 cm) away from
all wires having greater than 24VDC on them. For best results run
the encoder cable in a separate conduit from the controller to the
motor.
Installation and Connection
Input equivalent circuit
A +
B +
A -
B -
approx.
120
approx.
34
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