Incremental Encoder FG 2
FG2_MANUAL-en_R8(2016-08-11)ID70199.doc
11
4
Overview additional options
4.1
Option S (overspeed switch)
The incremental encoder
FG 2
with option S has an insulated switching output. The
switching function is realized with a semiconductor, the switching speed is set in our factory
(switching hysteresis 10%).
If the set switching speed is exceeded, the switch opens.
It is recommended to save the switch circuit against an overcurrent with a fuse (0,5A).
Specification
Value
Switching speed range, factory-set
AK with solid shaft max. 6300 rpm at 1024 impulses
AK with solid shaft max. 4687 rpm at 2048 impulses
AK with hollow shaft max. 5400 rpm at 1024 impulses
AK with hollow shaft max. 4687 rpm at 2048 impulses
AL with solid shaft max. 5273 rpm at 1024 impulses
AL with solid shaft max. 2636 rpm at 2048 impulses
AL with hollow shaft max. 5273 rpm at 1024 impulses
AL with hollow shaft max. 2636 rpm at 2048 impulses
Deviation from switch:
Accuracy of measurement: 2%
Switching time T
Sw
:<3ms
Switch data
0…30V DC/max 500mA
Max. voltage drop at closed switch: 0,7V
4.2
Option LWL (signal transmission using fiber optics)
The signals 0°, 90° and marker pulse from the incremental encoder will be encoded and
transmitted via fiber optics cable. Fiber optic cable types 50/125 µm or 62,5/125 µm are
available.
4.3
Option AKK (double pulse output)
Incremental encoder with optic scanning in redundant design. This provides the following
combinations of the output signals.
FG(HJ) 2
Output 1
(Basic unit)
Output 2
(double pulse output)
Redundant (number of pulses)
1024
1024
Redundant (number of pulses)
2048
2048
Combined (number of pulses)
1024
2048
