ADB Safegate CRE 10, Installation Manual

Page: 35 / 86

A.07.370e - Edition 2.0 35
Description
3.5.12Lamp Fault Detection (LFD)
The equipment analyses the output current and the voltage pattern to calculate, on a linear load, the number
of open circuited lamps, in compliance with IEC 61822.
The accuracy is ± 1 lamp with a range from 1 to 15 broken lamps.
The HMI shows the actual LFD value.
3.5.13Earth Fault Detection (EFD)
The EFD measures the insulation resistance between the series circuit and the earth in compliance with IEC
61822.
The EFD module works when the equipment is connected to the mains supply, even if no output current is
present.
You can set two alarm levels, Level 1 and Level 2, for the measured values. Both alarm levels can be set to
any value between 5 kOhm and 500 MOhm. However, Level 1 must always be higher than Level 2.
Working principle: A high-voltage resistor applies a stable, current-limited voltage of 450 VDC between the
series circuit and the earth or cable screen.
The HMI shows the actual EFD value.
3.6 Options
3.6.1 Remote control
These remote control connections are possible:
- Ethernet (Ethernet PCB required)
- Single
- Double
- J-Bus
- Single
- Double
- Multiwire with 8 input signals and 17 output signals, always possible to monitor via single J-Bus
3.6.2 Ethernet PCB (EPS542), all cabinets
The ethernet PCB converts the ethernet to an RS-485 signal. This
PCB is required if you need to remotely operate the equipment
through an ethernet connection.
The illustration shows a double ethernet connection.