ABB EDS500 Series, Руководство пользователя

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Connections Device description
Pin allocation transmission line interface (X3)
Pin Signal
1 NF1a
2 NF1b
3 NF2a
4 3 2 1
4 NF2b
4.5.4 Alarm relay (X4)
The EDS500 devices are equipped with a potential free alarm output (relay with isolated
switchover contact). This output corresponds to a device alarm and is activated when the
device looses the power supply or the alarm LED is constantly on (see Chapter 4.6, "Display
elements"). The reason for the signaling of an alarm can be referenced in the system alarm
table.
Alarm output (X4)
Type of switch toggle (potential free)
Switching voltage 60 VDC / 25 VAC
Switching current 500 mA
Plug type Phoenix Contact MSTBT 2,5/4-ST
Circuit classification
Overvoltage protection
line to earth ±4 kV, line to line ±2 kV
Electrical fast transient / Burst, IEC 61000-4-4 4 kV (level 4), criterion A
Surge 1.2/50 µs, IEC 61000-4-5 4 kV line to earth, 2 kV line to line (level 4), cri-
terion B
Conducted disturbances, induced by radio-
frequency fields, IEC 61000-4-6
10 V (level 3), criterion A
Conducted, common mode disturbances
in the frequency range 0 Hz to 150 kHz,
IEC 61000-4-16
30 V continuous disturbance/ 300 V short
duration disturbance (level 4), criterion A
Pin allocation alarm output (X4)
Pin Signal
1 & 2 Normal state
1 & 3 Alarm state
1 2 3 4
4 Common contact (connected to 1)
WARNING
The relay is designed for switching only safety extra low voltages.
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