ProtEX-MAX PD8-6310-WM Explosion-Proof NTEP Certified Batch Controller Instruction Manual
19
Pulse Input Signal Connections
Signal connections are made to a six-terminal connector labeled SIGNAL on Figure 8. The COM
(common) terminal is the return for the input signals.
The following figures show examples of signal connections.
Setup and programming is performed through the front panel buttons.
Figure 10: Flowmeter Powered by Internal
Power Supply
Figure 11: Flowmeter Powered by External
Supply
Figure 12: Self-Powered Magnetic Pickup
Coil Flowmeter
Figure 13: NPN open Collector Input
Figure 14: PNP Sensor Powered by Inter-
nal Supply
Figure 15: Switch Input Connections
Serial Communication Connections
The ProtEX-MAX has a 5 position terminal block for connecting RS-485 serial devices.
Figure 16 details the wiring connections from the ProtEX-MAX to an RS-485 serial converter (such as the
PDA7485 or PDA8485) for a four-wire network.
ProtEX-MAX to RS-485
Serial Converter Connections
RS-485 Serial
Converter
ProtEX-MAX RS-
485 Connections
DO
DI
DO
DI
DI
DO
DI
DO
Figure 16: ProtEX-MAX Connections to a Serial Converter
The ProtEX-MAX has three diagnostic LEDs: a Power (P) LED to show when the module is powered
properly, a Transmit Data (TX) LED to show when the module is being transmitted to by the PC side, and
a Receive Data (RX) LED to show when the module is sending data to a receiving device.
The following diagrams detail how to connect the RS-485 serial communications from the ProtEX-MAX to
a RS-485/RS-232 serial converter (PDA7485) in four wire and two wire configurations.
