Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 32)

Installation
Chapter 3
3-8
Important: The asynchronous port of the KF2 module can communicate
at a maximum rate of 9,600 bits per second. If your 1771-KD module
was set to communicate at a higher rate, then you might have to make
some modifications to your RS-232-C link before installing the
replacement KF2 module.
A KF2 module is not actually mounted in the sense that other
Allen-Bradley communication modules are. It is simply situated on a
surface, like a desktop, near a wall plug for AC power. It is set for 115V
operation when it reaches you. Connections to 115V AC and 230V AC
are described below.
Place the KF2 module within 100 cable-feet of the Data Highway
trunkline. If you are connecting the module directly to an RS-232-C
device, you must also mount the module within 50 cable-feet of that
device. If you are using a modem link to connect the KF2 module to the
asynchronous device, then the module and the device may be as far apart
as the modem link will allow. If you are connecting the KF2 directly to
an RS-422-A compatible device, you must mount the module within
4,000 cable-feet of that device.
115V AC Operation
The “power select” switch is above the ON/OFF switch on the module’s
rear panel. Set this switch to “115.” The power cord (approximately
7’4”), supplied with the module, must be plugged into the receptacle at
the right of the ON/OFF switch. Plug the other end of the power cord into
any standard 115V AC power outlet. Switch must be set before
power-up.
230V AC Operation
Set the “power select” switch to “230.” Do NOT use the power cord
supplied with the module. This cord is not approved for connection to a
230V AC outlet. To guard against electrical shock or fire, the power
supply cord must be approved for 230V AC by Underwriters Laboratories
or a similarly recognized agency. To mate with the receptacle on the
module’s rear panel, the power cord must be terminated in a molded
female connector (CEE 22 Standard V).
Mounting (Placing)