Installation Instructions

Document No. 565-1005
Installation Instructions
March 3, 2014
Page 2 of 3
Siemens Industry, Inc.
Expected Installation Time
30 minutes
Required Tools and Materials
 Flat-blade screwdriver (1/8-inch blade width).
 Wire strippers.
 Cabling and connectors. See the
Connecting the
Siemens MXL Driver to the MXL System
section.
CAUTION
Always wear an electro-static
discharge (ESD) wrist strap and
discharge accumulated static before
touching field panel components.
Prerequisites
 Driver hardware is installed according to its
respective installation instructions.
Depending on the type of installation, other
prerequisites may have to be completed.
Connecting the Siemens MXL
Driver to the MXL System
Follow these steps to connect the Siemens MXL
Driver to the MXL system:
1. Follow all shutdown procedures necessary to
prevent damage to any equipment or harm to any
personnel.
2. Turn OFF power to the PXC Series enclosure.
3. In the MXL enclosure, locate the NIM-1R or NIM-
1W module (hereafter referred to as the NIM-1
module). This module will be plugged into the
connectors on a MOM-2 or MOM-4 module. If it is
plugged into a MOM-4 module, note whether the
NIM-1 module is plugged into the slot closest to
the terminal block labeled TB3 or TB4.
 If the NIM-1 is plugged into a MOM-2 module,
or if it is plugged into the slot closest to
terminal block TB4, the following instructions
apply to connections on TB4.
 If the NIM-1 module is plugged into a MOM-4
module, in the slot closest to TB3, the
following instructions apply to connections on
TB3.
4. Connect one end of the shielded twisted pair
cable to terminal 1 and 2 on the appropriate
terminal block. (See Figure 1 and Figure 2.)
 Terminal 1 is the negative (-) terminal
 Terminal 2 is the positive (+) terminal.
 There is no terminal available for the shield,
so it will be connected at the driver.
5. Connect a 120-ohm, 1/4 watt resistor between
terminals 3 and 4 of this same terminal block.
(See Figure 2.)
6. At the PXC Series, attach the +, -, and S leads of
the RS-485 cable to an FLN connector , and plug
the connector into the FLN1 port on the RS-485
Expansion Module.
 Allow an additional 12 inches (305 mm) of
cable before terminating to the connector.
NOTE:
The standard practice used by MXL
installers would also require a 120-
ohm resistor between terminals 1 and
2. Do NOT install a resistor across
these terminals.
7. Turn ON power to the PXC Series enclosure.
8. Start any other equipment that might have been
shut down for this installation.