Encoder Input Selection - Mitsubishi Electric 800 Series Instruction Manual

4.3

Encoder input selection

Pr.
Pr.
group
Control terminal option-
851 C240 Number of encoder
pulses
Control terminal option-
852 C241 Encoder rotation
direction
Control terminal option-
855 C248 Signal loss detection
enable/disable selection
Encoder option
862 C242
selection
*1 Under PM vector control, the operation for the setting of "0" is performed when "100" is set. The operation for the setting of "1" is
performed when "101" is set.
NOTE
• If operating at a frequency higher than 120 Hz with Pr.852 ="0 or 1", the motor rotation will be unstable.
46
PARAMETER
Initial Setting
Name
value
2048 0 to 4096
0
100
1
1
101
0
0
1
0
0
1
range
Set the number of pulses output from the encoder connected to the
FR-A8TP.
Set the number of pulses before it is multiplied by 4.
Set when using a motor (encoder) for
which forward rotation is clockwise
(CW) viewed from the shaft
*1
Set when using a motor (encoder) for
which forward rotation is
counterclockwise (CCW) viewed from
the shaft
*1
Signal loss detection disabled
Signal loss detection enabled
First motor: FR-A8AP, Second motor: FR-A8TP
First motor: FR-A8TP, Second motor: FR-A8AP
Description
Set for the operation at 120
Hz or less.
CW
Set for the operation at a
frequency higher than 120 Hz.
Set for the operation at 120
Hz or less.
Set for the operation at a
CCW
frequency higher than 120 Hz.