TTL Output Module
Cat. No. 1771OG
Installation Instructions
4
Installing the Output Module
To install the TTL output module in your 1771 I/O chassis, follow the steps
listed below:
ATTENTION: You must first turn off power to the 1771 I/O
chassis backplane and field wiring arm before removing or
installing an I/O module.
Failure to turn off power to the backplane or field wiring arm
could cause personal injury, module damage, or degradation
of performance.
Failure to turn off power to the backplane could cause
personal injury or equipment damage due to possible
unexpected operation.
1.
Turn off power to the I/O chassis.
2.
Place the module in the plastic tracks on the top and bottom of the
slot that guides the module into position.
3.
Do not force the module into its backplane connector. Apply firm,
even pressure on the module to seat it properly.
4.
Secure the module’s position by doing the following:
With a Series A chassis, snap the chassis latch over the top of the module
With a Series B chassis, pull down the locking bar
5.
Connect the field wiring arm to the output module.
Connecting Wiring to the Output Module
Connect wiring to the input module using the field wiring arm (cat. no.
1771-WC) shipped with the module (shown in the following figure). Make
your connections as follows:
1.
Attach the field wiring arm to the pivot bar on the bottom of the I/O chassis.
2.
Pivot the field wiring arm upward and push it into the module until
the field wiring arm clicks into position. The field wiring arm is
designed to let you install and remove the module without
disconnecting the wires.
ATTENTION: Do not apply ac or reverse dc voltage to module
terminals. Circuitry at the input of module may be damaged.