GÜDE Expert Power Control 8291, Manual

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Expert Power Control 8291 © 2020 GUDE Systems GmbH
Device Description
LEDs go from "on" to "off"). When the port is turned on again, the eFuse is reset and the
output will operate normally until another short circuit or overload occurs. Triggering of an
eFuse is indicated on the front panel LEDs by a flashing green triangle above a port
number. The following states exist for an eFuse:
State Number Web Icon Frontpanel LED
switched off (Ok) 0
switched on (Ok) 1
eFuse triggered (Error 1) 2 flashing triangle
External voltage source (Er-
ror 2) 3 flashing triangle
The numbers (0 - 3) of eFuses are returned by console commands, SNMP and Modbus
TCP as eFuse state description.
Operating external voltage sources at the outputs of the EPC 8291-1 can cause
damage to the device.
In this example an overload has occurred on port 2 of bank A.
Overvoltage Protection
The device has a type 3 overvoltage protection. The status of which is indicated by a
green and a red flash on the front panel. A green flash indicates that the protection is op-
erational, a red flash indicates that the overvoltage protection is out of order. In addition,
the status of the surge protection cant be determined via data communication with the
device. Each surge protector is designed to discharge a virtually unlimited number of
surge pulses in normal installation environments. In an environment with many high-en-
ergy surge pulses, aging of the surge protection element can lead to a permanent failure
of the function.
The surge protection function can only be restored by the manufacturer of the
device. Normally, the device will continue to operate even after the failure of the protect-
ive function.
Signalling via e-mail, syslog or SNMP trap is only done once during operation, ex-
actly at the moment when the protection fails. In addition, a message is generated when
the device is switched on if the surge protection is not operational.