User Guide
Doc# A824D001 v2.0
15-Nov-2018
Page 12 of 28
PI (Physik Instrumente) L.P.
16 Albert Street, Auburn, MA 01501
Tel: 508-832-3456 Fax: 508-832-0506
Email: [email protected]
5. Mounting
The A-824
is intended for either desktop use or to be mounted in a 19” wide electrical rack using the mounting
holes on the front panel. Mounting holes for side-mounted slide rails are included; the rails themselves are not
included.
Take care not to block the air inlet and exhaust ports on either side if the chassis, otherwise the
controller could overheat.
6.
Connecting the Cables
Stage interconnect cables are not in the scope of delivery of the A-824. However, PI offers several standard
cable sets that can be used, depending on the motion controller options being used. See Section 16.4 for
connector pin assignments.
Only use the interconnect cables that have been designed for the combination of stage and
controller being used. Connection using the wrong cable may result in damage to the stage and
the controller.
To minimize the possibility of electrical shock and bodily injury or death, disconnect all electrical
power prior to making any electrical connections.
To minimize the possibility of electrical shock and bodily injury or death when any electrical
circuit is in use, ensure that no person comes in contact with the circuitry when the stage is
connected to a power source.
To minimize the possibility of bodily injury or death, disconnect all electrical power prior to
making any mechanical adjustments.
Prior to electrically connecting the stage to the A-824 controller, follow the instructions in the
stage’s user guide
for proper mounting of the stage and the stage payload.
1. Connect the #1 stage motor connector to the A-824
“Motor 1” connector with the proper interconnect cable.
2. Connect the #1 stage encoder connector to the A-824
“Encoder 1” connector with the proper interconnect
cable.
3. Repeat steps 1 & 2 for axes #2 through #4 as needed.
4. Connect the air pressure switch on the Air Prep Kit (if purchased) to the A-824
“Interlock” connector with the
proper interconnect cable.
5. Ensure that all cable connector screws are securely fastened, but do not overtighten.
6. Connect the A-824 to the host PC using an Ethernet patch cable.
7. Connect the A-824 power input connector to an AC outlet using the power cord provided with the controller.
When ready to use, switch on the controller power using the power switch located on the front of the A-824. A
blue power-on indicator light on the front of the A-824 will turn on.
7. Hardware Interlock
The controller has an interlock input that needs to be connected to a +24 VDC source for the servo drives to run;
otherwise the controller will be in the
“Interlock fault” state; no motion can be commanded and the motors cannot
be energized. See Section 16.4 for connector pin assignments.
The interlock is typically connected (in series to a +24VDC supply) to an air pressure switch on a PI-supplied A-
80x series air prep kit. In the event of an air pressure loss, the switch will open and the interlock will disable the
servo drives.