Kaman 8000 Enclosures - Manual (Page 38)

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4-20mA Display Input Configuration
The MCD 8000 can take either voltage or current inputs. When configuring for current input
you need to snap off the front panel lens to gain access to the display board. Behind the
display is a DIP switch used to set the indicators input measuring mode. You will also need to
change the wiring on the display terminal block (see section on Input Wiring to the Display) to
go into the +I and -I terminals. This mode is not normally used but may be if there is a special
request to display the output from the VC8000 or other third party module that has 0-20mA or 4-
20mA output. When configured for current input all channels will be configured to measure
current.
fig. 24 -- Voltage/Current Input Dip Switch;
When using the current loop type inputs, it may be desirable to install diodes on each channel
to maintain loop continuity of disengaged channels. Use 1N4002 DIODES installed in the
terminal block screw terminals or soldered onto the multi-channel input circuit board (you
must take the display apart to do this, pads are provided on the board).
fig. 25 -- Diodes For Loop Continuity in Current Mode;