MID-7654/7652Servo Power Motor Drive User Guide 24 ni.com
Figure15. ShieldedTwisted Pairs
Note Usingan unshielded cable may produce noise, which can corrupt the encod er signals
and cause lost counts, reduced accuracy,or other erroneous encoder and controller
operation.
Limit Switch TerminalBlocks
Forend-of-travel limit, home, inhibit input, and inhibitoutputconnections,
MID-7654/7652axes have a separate, 6-position remo vable screw terminal
connector block. Figure 16 shows the limit switch terminal block pin
assignments.
Figure16. LimitSwitch Terminal Block Pin Assignment
(PassiveLimit Switch Connection Example)
Youcan configure the inhibit output signal to be asserted low or asserted
highfrom the MID-7654/7652 when an axis is inhibited. This signal can be
usefulfor actuatingmechanical brakes or for monitoring an axis status.
Refert o the Amplifier Inhibit LEDs section of this guide for a description
oft he conditions that will cause an axis to be inhibited.
Shield
+5V
EncoderIndex
EncoderIndex
EncoderB
EncoderB
EncoderA
Drain
EncoderA
Digital
Ground
1
6
2
3
4
5
ForwardLimit
HomeInput
InhibitInput
DigitalGround
ReverseLimit
InhibitOutput