9-3-2-4. Scale length setting (Initial No.93)
Obtain the required scale length for the sensor in question as shown below.
For multi-turn type (MRE) sensors, this distance is the travel amount which corresponds to the prescribed number
of turns for that sensor (32, 64, 160,256,320,640,1280,2560)
For linear type (VLS) sensors, the scale length is indicated in the box portion of the model name. (Ex.VLS- 256
PW, VLS- 1024 PY)
[1] Scale Length Setting
The scale length would be calculated as shown below
when a 128 turn MRE sensor is coupled directly to a
ballscrew (lead length of 10mm) feed mechanism where
the drive unit’s minimum setting unit is 0.01mm (This
setting unit is designated at Initial No.91)
Actual detection distance =10 mm × 128 turns =1280 mm
Actual detection distance 1280
Scale length = = = 128000 (1280.00)
Minimum setting unit
0.01
Designate the scale length using the numerical keys
as desired.
Note
The setting may not exceed 6 digits. To accommodate
settings of more than 6 digits, change the decimal
point position.
[2] Register (provisional) the Scale length setting.
Press the key to register the designated Scale
Length setting.
Note
Nos.93 and 94 must be set as a pair. The settings are
Only valid when both are set. They cannot be set
individually.
The system will automatically proceed to Initial No.94.
For example, "256" is the Absolute Detection Range and is set as the Scale Length when using
VLS-256PW200B; however, the actual stroke length is "200".