B&R ACOPOSinverter P84, Руководство пользователя

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Accessories
ACOPOSinverter P84 User's Manual 2.10 399
Note:
If the parameter [Encoder type] (EnS) is set to AB, the ACOPOSinverter P84 only counts the positive
edges of the AB encoder.
Example:
If you use an AB encoder with 1024 increments per revolution, for the parameter
[number of pulses]
(PGI) 256
must be configured because the ACOPOSinverter P84 only counts the 256 positive edges.
A-track
B-track
Start
Rising edge
PUC = 1 PUC = 2 PUC = 3 PUC = 4
PUC: Encoder count value
Properties
• Encoder interface boards are used to handle flux vector control with an encoder (FVC mode) for induction motors. This
improves the drive performance regardless of the motor load status:
– Torque at standstill (0 rpm)
– Precise speed control
– Exact torque
– Shorter response times for sudden increases in torque
– Improved dynamic performance.
• For induction motors, encoder interface boards used in the other control modes (voltage vector control, voltage/frequency
ratio - V/f characteristic curve) can improve the static speed precision.
• Three board types are available depending on the encoder technology:
– RS422-compatible differential outputs
– Open collector outputs (NPN)
– Push-pull outputs
•
Regardless of the control type, the encoder interface card provides extra safety for the machine:
° Measures overspeed
° Measures motor pull-out
With the encoder interface card a reference value of an encoder input can also be transferred to the ACOPOSinverter P84. This
application is specifically for the speed synchronization of several inverters.
These two functions are available in conjunction with the encoder interface cards 8I0AC123.300-1 ... 8I0AC123.306-1.
The ACOPOSinverter P84 is designed for the inclusion of an encoder interface card. It is inserted in a special slot in the inverter.
Note:
If an encoder card that supports A, A and B, B as well as A/B differential signals is used as an accessory,
the B/ and A/ pins must be connected to ground.
Wiring
The pin outputs can vary depending on the encoder type or connector type.
Basic settings:
•
A (encoder) connected to A (encoder card)
• A (encoder) connected to B (encoder card)
• A/ and B/ are linked and jumpers to 0 V encoder card
•
+24 VDC connected to +V (encoder card)
• 0 V to 0 V (encoder card)