YASKAWA G7 Series Technical Manual page 70

Wiring the PG-B2
Wiring examples are provided in the following illustrations for the PG-B2.
Three-phase
200-240 Vac
(380-480 Vac)
PG power
supply +12
Vdc
A-phase pulse
input
B-phase pulse
input
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2
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Drive
•
Shielded twisted-pair wires must be used for signal lines.
•
Do not use the pulse generator's power supply for anything other than the pulse generator (encoder).
Using it for another purpose can cause malfunctions due to noise.
•
The length of the pulse generator's wiring must not be more than 100 meters (328 ft).
•
The direction of rotation of the PG can be set in user parameter F1-05. The factory preset if for forward
rotation, A-phase advancement.
Fig 2.22 PG-B2 Wiring
•
When connecting to a voltage-output-type PG (encoder), select a PG that has an output impedance with
a current of at least 12 mA to the input circuit photocoupler (diode).
•
The pulse monitor dividing ratio can be changed using parameter F1-06.
A-phase pulses
B-phase pulses
Fig 2.23 I/O Circuit Configuration of the PG-B2
Power supply +12 Vdc
Power supply 0 Vdc
A-phase pulse output (+)
A-phase pulse output (-)
B-phase pulse output (+)
B-phase pulse output (-)
A-phase pulse monitor output
B-phase pulse monitor output
A-phase
pulses
B-phase
pulses
A-phase pulse
monitor output
B-phase pulse
monitor output