Shihlin electric SDE Series, Manual

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6.7.4. Electronic gear
Users could set different electronic gear ratios to enable the mechanism to move different distances.
Relevant parameters are presented below.
Name
Name
Abbr.
Sign
Setting
range
Unit Default
Control
mode
Electronic gear numerator CMX PA06
1
~
2
26
- 1 Pt,Pr
Electronic gear denominator CDV PA07
1
~
2
26
Electronic gear numerator 2 CMX2 PC32
1
~
2
26
Electronic gear numerator 3 CMX3 PC33
1
~
2
26
Electronic gear numerator 4 CMX4 PC34
1
~
2
26
The improper setting could lead to unexpected fast rotation so make sure to set them in the state
of SERVO OFF. The range of the electronic gear ratio is . If the setting
value is outside this range, the operation of motor may not be performed. The relationship of electronic
gear numerator and electronic gear denominator is plotted below.
4 electronic gear numerators are available for users to select. Enable the function CM1 and CM2 of DI
to switch. See the table below.
Name CM1 CM2 Control mode
Electronic gear numerator (PA06) 0 0
Pt, Pr
Electronic gear numerator 2 (PC32) 1 0
Electronic gear numerator 3 (PC33) 0 1
Electronic gear numerator 4 (PC34) 1 1
Note: 0: OFF (CMx-SG is open-circuit), 1
：
ON (CMx-SG is short-circuit), x=1,2
Calculation of electronic gear ratio
Before calculating this value, users have to know the specifications the motor encoder resolution
(
2
22
=4194304ppr), the reduction rate, gear ratio of machine. Use the following equation to calculate the
electronic gear ratio.
Encoder resolution 4
Electronic gear ratio=
Load distance per revolutio(angle) / Distance pulses to be shifted entered by user

a