Partlow MRC 7000, Installation & Operation Manual

Page: 14 / 64

14
FIGURE 2-5
AC Instrument Power Input
Connect the 115 VAC hot and neutral to terminals 1 and 2 respectively of TB1. See Figure 2-4
(page 13) for Terminal Board locations on the instrument. Connect the 230 VAC one leg to
each terminal, be sure to check the position of the Voltage Selector switch provided with 230
VAC instruments. The switch position must match the voltage input to the instrument.
FIGURE 2-6
Thermocouple Inputs
Use TB4 for the Pen 1 input, and TB5 for the Pen 2 input. Connect the positive leg of the
thermocouple to terminal 1, and the negative to terminal 2. Be sure that the input conditioning
jumpers are properly positioned for a thermocouple input. See Appendix A-1 (page 50).
FIGURE 2-7
RTD Inputs
Use TB4 for the Pen 1 input, and TB5 for the Pen 2 input. Connections are shown for 3 wire
and 2 wire RTD inputs. If a three wire device is used, install the common legs to terminals 2
and 3. If a two wire device is used, install a jumper between terminals 2 and 3. Be sure that
the input conditioning jumpers are properly positioned for an RTD input. See Appendix A-1
(page 50).
1
2
TB1
Connect the AC
ground at the
green ground screw
on the left side of
the inside of the
case
Line 1
Line 2
TB4 or TB5
1
2 3 4 5
-
Grounded or
Ungrounded
Thermocouples
may be used
+
TB4 or TB5
1 2
3 4 5
-
+
TB4 or TB5
1 2
3 4 5
-
+
Jumper
3 Wire RTD 2 Wire RTD
SUPPLIED BY
CUSTOMER