Universal PMAC Lite
Jumpers Setup Summary
9
JUMPERS SETUP SUMMARY
On the PMAC Lite, there are many jumpers (pairs of metal prongs) called E-points. Some have been
shorted together; others have been left open. These jumpers customize the hardware features of the board
for a given application and must be setup appropriately. The following is an overview of the several
PMAC jumpers grouped in appropriate categories. For a complete description of the jumper setup
configuration, refer to the PMAC Lite Jumpers Descriptions section of this manual.
Power-Supply Configuration Jumpers
E85, E87, E88: Analog Circuit Isolation Control
– These jumpers control whether the analog circuitry
on the PMAC Lite is isolated from the digital circuitry, or electrically tied to it. In the default
configuration, these jumpers are off, keeping the circuits isolated from each other (provided separate
isolated supplies are used).
Putting E87 ON ties the digital GND reference signal to the analog AGND reference signal, defeating the
isolation between the circuits. Putting E85 ON ties the d12V supply line to the analog A+15V
supply line. Putting E88 ON ties the digital –12V supply line to the analog A-15V supply line. Putting
these jumpers on permits the bus +/-12V supply to power PMAC’s analog circuits.
E89-E90: Input Flag Supply Control
– If E90 connects pins 1 and 2 and E89 is ON, the input flags
(+LIMn, -LIMn, HMFLn, and FAULTn) are supplied from the analog A+15V supply, which can be
isolated from the digital circuitry. If E90 connects pins 1 and 2 and E89 is OFF, the input flags are
supplied from a separate A+V supply brought in on pin 9 of the J8 JEQU connector. This supply can be
in the +12V to +24V range, and can be kept isolated from the digital circuitry. If E90 connects pins 2 and
3, the input flags are supplied from the d12V supply, and isolation from the digital circuitry is
defeated.
E88
E85
E89
E87
A+15V
+5V
AGND
E90
GND
A-15V
+12V
+5V
GND
-12V
3
1
1
3
E100
P1 (Bus) / TB1
JMACH1
V/F
Input
Flags
AENAs
(EQUs)
DACs
AGND
J8 JEQU
(12-24V)
A+V (pin 9)
AGND
Summary of Contents for Universal PMAC Lite
Page 7: ...Universal PMAC Lite Table of Contents iv...
Page 14: ...Universal PMAC Lite Introduction 7 Universal PMAC Lite Dimensions Part Number 602402...
Page 15: ...Universal PMAC Lite 8 Introduction...
Page 23: ...Universal PMAC Lite Jumpers Setup Summary 16...
Page 49: ...Universal PMAC Lite Machine Connections 42...
Page 51: ...Universal PMAC Lite Host PC AT I O Address Map 44...
