Installation
9
6-Wire Load Cell Connection with Optional Quick Disconnect
-
-
+
+
+
-
Load Cell
120 Plus
Signal
Excitation
Sense
Excitation
Sense
Signal
Figure 2-4. 6-Wire Load Cell Application
2.4
Optional I/O Connections
The optional I/O board provides three digital inputs and two isolation digital relay outputs.
2.4.1
Remote Switcher
The 120 Plus indicator has provisions to connect an external input device such as a push button switch (purchased
separately) to provide a keypad function. The keypad function can be set in the SETPNT menu; the external device
must provide a normally open (N.O.) momentary switch contact. The remote switch input requires a voltage free
contact between RSW input and GND.
HDB15
7
15
14
13
RSW1
RSW2
RSW3
120 Plus
Figure 2-5. Connect Remote Switcher Inputs to an External Input Device
The following table displays the pins and port functions of the female HDB15.
Table 2-5. Remote Switch Pin Outs
Pin
Port
Function
4
Out 1/2 Com
Setpoint 1 and 2 common
5
Out 2
Setpoint 2
7
Ground
Remote switch 1, 2, and 3 ground
10
Out 1
Setpoint 1
13
RSW 1
Remote switch 1
14
RSW 2
Remote switch 2
15
RSW 3
Remote switch 3
Содержание 120 Plus
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