IDEC SMARTRELAY User Manual page 47

FL1F- 2B2
The illustration above shows an example of four-wire current measurement and two-wire
voltage measurement.
Connecting a two-wire sensor to the FL1F- 2B2
ire up the two-wire sensor s connecting wires as follows:
1. Connect the sensor s output to connection U (0 V to 10 V voltage measurement) or to
connection I (0/4 mA to 20 mA current measurement) of the FL1F- 2B2 module.
2. Connect the plus connector on the sensor to the 24 V supply voltage (L ).
3. Connect the ground connection of the current output M (on the right side of the sensor, as
shown in the figure above) to the corresponding M input (M1 or M2) on the FL1F- 2B2
module.
Note
Fluctuating analog values can occur if you do not mount/correctly mount the screening on the
connecting wire from the analog valuator device to the analog FL1F- 2B2 expansion module
(encoder wire).
To avoid fluctuating analog values when using these expansion modules, take the following
measures:
Use only shielded cable.
Shorten the cable as much a possible. The cable must not be more than 10 meters long.
Clamp the cable on one side only and clamp it only to the FE terminal on the FL1F- 2B2/
Connect the earth to the FE terminal on the expansion module.
IDEC SmartRelay Manual
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
L+ M L+ M
DC 12/24V
RUN/STOP
INPUT 2x (0...10V/0...20mA)
I1 M1 U1 I2 M2 U2
3
FE terminal for connecting earth and
shielding the cable
Earth
2BM2 expansion module.
IDEC SmartRelay installation and wiring
4
2
1
Shielded cable
Standard DIN rail
2.3 iring IDEC SmartRelay
35