ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller
Instruction Manual
31
Digital I/O Connections
Digital inputs and outputs are provided in order to
expand the functionality of the controller. Digital input
connections are made via a push button or switch to
the appropriate digital input terminal and the +5 VDC
terminal. Digital output connections are made by
wiring from the appropriate digital output terminal to
the ground terminal.
Figure 17. Digital Input and Output Connections
The onboard digital inputs (1-4) are configured at the
factory to function identically to the front panel
pushbuttons (Menu, F1, F2, & F3) in order to work
with the SafeTouch buttons. Changing the
programming of the digital inputs will affect the
function of the SafeTouch buttons.
If you wish to change the behavior of the digital
inputs, re-assign F1-F3 to the desired function, then
change the corresponding digital input to match.
•
DO NOT
disconnect the RJ45 M-LINK connector
cable. Otherwise the instrument will not function
properly.
F4 Digital Input Connections
A digital input, F4, is standard on the controller. This
digital input should be connected with a normally
open contact across F4 and COM, or with an active
low signal applied to F4. It can be used to start/stop
the batch, reset the total, acknowledge/reset relays,
or to reset max/min values. See
Digital I/O Available Settings
on page
complete list of capabilities.
Figure 18. F4 Digital Input Connections
4-20 mA Output Connections
Connections for the 4-20 mA transmitter output are
made to the connector terminals labeled MA OUT.
The 4-20 mA output may be powered internally or
from an external power supply.
Figure 19. 4-20 mA Output Connections
P-
COM
P+
V+
mA+
3
4
1
2
5
F4
6
4-20 mA Input
Remote Display, PLC,
Chart Recorder, Etc.
-
+
R
I-
I+
1
3
2
RELAY1
mA OUT
24 V
12-35 VDC
Power
Supply
+
4-20 mA
Input Meter
-
+
R
I-
I+
1
3
2
RELAY1
3
2
1
-
24 V
mA OUT
Internal Power Supply
and Analog Output
3
2
1
Active Output Loop
Passive Output Loop
