MID-7604/7602Power Drive 8 ni.com
The tworocker switches on the MID-7604/7602 front panel are the
ACPOWER and ENABLE. Figure 1 shows the location of these switches.
The ACPOWER switch energizes the motor bus (+24 V) and the logic
(+5V) powersupplies. When switched on, the green power LED labeled
+5V illuminates. If this LED fails to illuminate, check the power cord and
maininput fuse on the front panel.
The ENABLEswitch enables or inhibits the stepperd rivers.If the
ENABLEswitch is in the inhibit position (off), the stepper drivers are
inhibited, and the yellowLEDs (the midd le rowof the LED status array)
for all axesillu minate. See the Front Panel LEDs section of this guide for
more information.
Both the ACPOWER and ENABLE switches can inhibit the stepper
drivers.However, as long as the ACPOWER switch is on, only the stepper
driveroutput stages are disabled. The remaining circuitry remains active,
including the quadrature encoder circuit.
Caution You mustchange the MID-7604/7602 main input fuse on the front panel if you
changethe line voltage from the factory setting. Refer to the Specifications section of this
guide for fuse specifications.
Back Panel Connector Wiring
Figure 2 showsconnectors located on the back p anelof y our
MID-7604/7602.
Figure2. MID-7604/7602 Back Panel Connectors
Note Items followedby an asterisk (*) are available on the MID-7604 only.
1 MotionController Connector
2 AnalogInput Connector
3 AnalogOutput Connector
4 TriggerConnector
5 BreakpointConnector
6 ACPower
Encoder
Connectors
7Axis1
8Axis2
9Axis3*
10 Axis 4*
Limit
Connectors
11 Axis 1
12 Axis 2
13 Axis 3*
14 Axis 4*
Motor
Connectors
15 Axis 1
16 Axis 2
17 Axis 3*
18 Axis 4*
1 2 3 4 5
78
11 12
910
13 14
15 16 17 18
6