Thermo Scientific DensityPRO+, Installation Manual

Page: 36 / 107

Wiring
General Wiring Procedures
Procedure The transmitter has slots for the following boards:
●
Optional AC power supply
●
CPU board
●
PCB 1: Standard current I/O / DC power board
●
PCB 2: Optional current I/O board with two contact inputs and two
optional relays
●
PCB 3: Optional current I/O board with two contact inputs and two
optional relays
●
PCB 4: Voltage/current pulse interface (VPI) board (p/n 868712), used
to interface with the detector
Follow this general procedure for wiring boards installed in the transmitter,
RS232 or RS485 serial ports, relay contacts, contact closure inputs, 4–20
mA current output(s), and detector signal cables to the transmitter. You
will need a 1/8-inch bladed screwdriver.
Note CSA certified fittings must be used to maintain CSA rating for the
enclosure. ▲
1. Ensure power is removed, and open the enclosure cover.
2. Remove the plugs only from the cable conduit holes you will use. The
holes are labeled on the transmitter enclosure.
3. Pull the cable through the fitting on the end of the enclosure. Leave
approximately 6 inches (150 mm) of stress relief. Secure the conduit,
ensuring it is completely sealed.
4. For ATEX versions of the 1400S: Install a ferrite clamp on all wiring.
You will need kit 868773. Refer to Appendix D .
5. Connect a cable to a PCB as follows:
a. Remove the plug-in screw terminal connector from the board
connector. If the connector is tight, brace the board with your hand
to remove the screw terminal connector, but be careful to not touch
any circuit components.
b. Loosen the terminal screws on the connector. Insert the wires into
the connector and make connections as shown in the appropriate
installation wiring drawing.
4-6 Den Installation Guide Thermo Fisher Scientific