INSTALLATION
PREPARING THE MODULE MOUNTING UNIT
I-E96-221A
3 - 9
Jumper J12 is normally set shorting pin 1 to pin 2. This avoids
potential damage if the board is connected to the MMU back-
plane in early Network 90 systems. Early Network 90 systems
applied -30 VDC to pins 3 and 4 of connector P1. This voltage
can cause damage to INFI 90 modules. In INFI 90 systems,
pins 3 and 4 of connector P1 are used for the redundant Con-
trolway bus. In this case, pins 2 and 3 of jumper J12 are
shorted to allow the IMCPM02 module to use the Controlway
in redundant mode. See Figure
for the schematic of jump-
ers J11 and J12.
PREPARING THE MODULE MOUNTING UNIT
Controlway Cable
This section explains how to connect the Controlway to two
MMU backplanes. Figure
shows the location of the Con-
trolway cable.
Verify the Controlway cable installation as follows:
1. Verify connection of one end of the (twisted 3-wire) to the
second column of two tabs on the lower left of the MMU back-
plane.
Figure 3-6. Schematic Diagram of Jumpers J11 and J12
4
3
5
1
2
2
2
2
3
3
3
4
5
1
1
1
MODC
JMODA
JMODB
MODULE BUS B
MODULE BUS A
P1-1
P1-5
P1-9
P1-2
P1-6
P1-11
P1-4
PFI
GROUND
SYS-P5V
J11
J12
P4
F1
1 A, 125 VDC
T00064A
