Partlow MRC 7000, Installation & Operation Manual

Page: 15 / 64

15
FIGURE 2-8
Volt, Millivolt and milliamp Input
Make the volt, millivolt or milliamp connections as shown below. Use TB4 for the Pen 1 input,
and TB5 for the Pen 2 input. Terminal 1 is positive and terminal 2 is negative. The milliamp
input requires the installation of an appropriate shunt resistor (ordered separately) between
terminals 1 and 2. Be sure that input conditioning jumpers are in the correct positions for the
input being connected. See Appendix A-1 (page 50).
Note: Fault Detection is not functional for 0-5V or 0-20mA Inputs.
FIGURE 2-9
Digital Communications Options
Connections are made as shown using TB2. Refer to the Protocol Manual, Form #2878 for
more details regarding the connections and how to use this option. This document is provided
only when this option has been specified. If the communications network continues on to other
instruments, connect the cable shields together, but not to the instrument. A terminating
resistor should be installed at the terminals of the last unit in the communications loop. If the
communications network ends at the instrument, the shield is not connected.
1 2 3 4 5
+ -
TB4 or TB5
SHIELDED
TWISTED
PAIR
SOURCE
+ -
MAY BE
GROUNDED
OR
UNGROUNDED
TOWARD THE
COMPUTER
TB2
1 2
NETWORK
CONTINUATION
(IF APPLICABLE)
Serial A
Serial B