ABB REF 541 - Page 37

Feeder Terminal REF 541, REF 543, REF 545.
1MRS750443-MBG
37
Voltage inputs rated voltage 100 V/110 V/115 V/120 V
(parameterization)
voltage withstand, continuously 2 x U
n
(240 V)
burden at rated voltage <0.5 VA
Sensor inputs, max 9 AC voltage range 9.4 V RMS
DC voltage range ±13.3 V
input impedance > 4.7 M
input capacitance < 1 nF
Table 8: Energizing inputs
Table 9: Auxiliary power supplies
Type PS1/240V
(REF 541,
REF 543)
PS2/240V
(REF 545
only)
External
display
module
PS1/48V
(REF 541,
REF 543)
PS2/48V
(REF 545
only)
Input voltage, ac 110/120/220/240 V -
Input voltage, dc 110/125/220 V 24/48/60 V
Voltage variation ac 85…110%, dc 80…120%
of rated value
dc 80…120% of rated value
Burden <50 W
Ripple in dc auxiliary voltage max. 12% of the dc value
Interruption time in auxiliary
dc voltage without resetting
<40 ms, 110 V and
<100 ms, 200 V
<60 ms, 48 V and
<100 ms, 60 V
Internal overtemperature
indication
+78C (+75…+83C)