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E6580750
2.2. PG Speed Feedback Control Using Pulse Input
This application performs speed feedback control in which motor speed fluctuations due load
variations are corrected using a pulse train feedback signal from an encoder mounted on
either the motor shaft or a rotating shaft in the load.
The system can provide a motor speed control precision with respect to the set frequency of
better than 0.1 % (60Hz base).
2.2.1. PG Speed Feedback Control Specifications
Table 2-3
PG speed feedback control specifications
Specification
Single-phase
Two-phase
Maximum pulse input frequency
120 kHz or less
60kHz or less
Pulse input voltage
12Vdc to 18Vdc
(for VF5X-4575A)
Speed control
±0.1% or less
Output method
• Open collector output
Applicable
• Complimentary output
encoder
Maximum output
pulse
120 kHz or less
60 kHz or less
Manufacturer: Sumtak Corporation
Type: LBJ series
Recommendatory encoder
Power supply: 12V or 1 SV*
Output method: Complimentary output
*:
Prepare external power source.
2.2.2. Procedures for PG Speed Feedback Control Connections
+ Use twisted shield wire for signal connection.
+ Never bind the signal wire and the main circuit wire together.
+ Recommendatory wire diameter is 0.75mm
2
·
•When the pulse input signal is a single-phase:
(1) Connect the pulse input signal between the terminals PGA 1 and PGA2 or between PGB1
and PGB2.
(2) Connection terminals will differ depending on the method of the encoder output.
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