Encoder Parameters (Clv) - Hitachi P1 Basic Instruction Manual

ENCODER PARAMETERS (CLV)

In most applications the encoder will terminate at the main body digital input terminals and the parameters with Main Body will apply.
In some special cases an external feedback card will be installed and the parameters with P1-FB will apply. In the case of the P1-FB
card CA-90 will need to = 00: disabled.
Encoder Phase Position is used to reverse the encoder phases through parameters instead of switching the signal wires in the case of
mounting an encoder backwards or connecting the wires in a reverse order.
The Speed Feedback Monitor dA-08 will show the detected frequency coming from the encoder. Verify the shown frequency matches
the direction of the hoist motion (Hoist up positive frequency / Hoist down negative frequency).
The Current Position Monitor dA-20 will show you the current position in pulses from the upper limit. This values typically is shown as
a negative value since the upper limit is 0.
Function
Main Body Encoder PPR
Main Body Encoder Phase Position
Main Body Encoder Input Function
P1-FB Ext Card Encoder PPR
P1-FB Ext Card Encoder Phase Position
Encoder Speed Feedback Monitor
Current Position Monitor
Parameter
CA-81
CA-82
CA-90
ob-01
ob-02
dA-08
dA-20
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Example Value
512
00: Phase A-Lead
01: Phase B-Lead
02: Speed Feedback
512
00: Phase A-Lead
01: Phase B-Lead
x.xx Hz
xxxx pulses