©NationalInstruments Corporation 17 MID-7604/7602Power Drive
Caution Neverconnect unused center taps or winding terminals to pin 3 ( ground) or to
eachother.
Encoder TerminalBlocks
Forquadrature incremental encoder signals, each MID-7604/7602 axis has
aseparate 8-positionr emovablescrew terminal block. Where applicable,
the MID-7604/7602 accepts twot ypes of encoder signal inputs:
single-ended (TTL)or differential line driver. Youcan accommodate
open-collector output encoders by using 2.2 kΩpullupresistors to
+5 VDC.
Figure 5 showsthe typical encoder wiring pin assignment for single-ended
signal input.
Figure5. Typical Single-Ended Encoder Wiring Pin Assignment
Figure 6 showsthe typical encoder wiring pin assign ment ford ifferential
line driversignal inputs.
Figure6. Typical Differential Line Driver Encoder Wiring Pin Assignment
1
2
3
4
5
6
7
8
EncoderA
EncoderB
EncoderIndex
+5V
DigitalGround
1
2
3
4
5
6
7
8
EncoderA
EncoderA
EncoderB
EncoderB
EncoderIndex
EncoderIndex
+5V
DigitalGround