Flowline LD30 DeltaSpan User Manual

Page 11

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Rev B

MN301030

11 of 14

ELECTRICAL INSTALLATION

Step Seven

Wiring: An external power supply delivering 13‐30 VDC with minimum current capability of 40 mA DC (per
transmitter) is required to power the control loop. See Figure A below for connection of the power supply,
transmitter and receiver. The range of appropriate receiver load resistance (RL) for the DC power supply
voltage available is expressed by the formula:

RLmax = (Vsup – 10V) / 20 mA DC

 Shielded cable is recommended for control loop wiring.
 Use the Red wire / (1) terminal as the (+) and the Black wire / (2) terminal as the (‐).

Fig. A

Connections
Cable Version (LD30‐S_01 Series)

(+) = Red Wire & (‐) = Black Wire

Conduit Version (LD30‐S_11 Series)

(+) = Terminal #1 & (‐) = Terminal #2

Wiring to a Loop Powered Display

Wiring to a Typical PLC