Badger Meter ER-420-AC - Page 28

Models ER-420-AC, ER-420-DC & ER-420-LP
Figure 7: Switch setting sensor supply voltage ER-420-DC / ER-420-AC
Switch positions
Sensor A Sensor B Voltage Selection
Switch 1 Voltage Switch 2 Voltage Switch 3 Switch 4 Voltage
internal 3.2V DC — — on on 8.2V DC
external switch 3+4 — — on off 12V DC
— — — — off off 2 V DC
• Function switch 1: voltage selection sensor A, terminal 11.
• Function switch 2: not available for this model.
• Function switch 3+4: the combination of these switches determine the voltage as indicated. Do move switch 1 and / or
switch 2 to the OFF position to enable the selected voltage with switch 3+4.
Terminal connections ER-420-DC and ER-420-AC
Terminal GND 01 - 02: Power Supply available only with type PD/PF or PM:
Type Sensor Supply
Terminal
GND 01 02
ER-420-DC 24V AC ±15% 8.2, 12, 24V max. 400 mA — AC AC
ER-420-DC 24V DC ±15% 8.2, 12, 24V max. 400 mA L– L+ —
ER-420-AC 115-230V AC ±15% 8.2, 12, 24V max. 400 mA EARTH AC AC
Note PF / PM: The total consumption of the sensors and outputs may not exceed 400 mA@24V
Terminal 05-06 scaled pulse output R1
SETUP 7 determines the pulse output function. The maximum pulse frequency of this output is 60 Hz, however, with the
mechanic output option supplied, be sure that the output frequency does not exceed 5 Hz or else the lifetime of the relay will
be reduced significantly. An isolated mechanical relay output is available for the ER-420-DC and ER-420-AC. Maximum switch
power is 240V 0.5A per output.
Page 28 March 2013