Operation
50
1.Response value
An alarm is output when the measured value reaches the response val-
ue. Response ranges:
EDS460/490
2…10 mA
EDS461/491
0.2…1 mA
Please also heed the characteristics for a reliable response on page 71.
2.CT
Set the transformer type.
W/WR
Bender standard measuring current transformers, circu-
lar and rectangular W... and WR... series designs.
WS
Split-core type WS... series measuring current transform-
ers.
off
measuring channel is deactivated
The following measuring current transformer types can be used:
EDS460, EDS490:
W…, WR…, WS…
EDS461, EDS491:
W…/8000, WS…/8000
3.Response delay T(on)
This is the response delay before the alarm is activated. This time delay
is necessary in cases where the monitored system is subject to interfer-
ence.
The duration of a test current pulse cycle is 6 seconds. Consequently,
the response delay can only be adjusted in increments of 6 seconds..
0s
An alarm is triggered when the first test current pulse is
detected.
6s
Two test current pulses must be detected before an
alarm is triggered.
12s
Three test current pulses must be detected before an
alarm is triggered.
Configurable values: 0s, 6s, 12s, 18s, 24s
Summary of Contents for EDS460
Page 20: ...System description 20 TGH1394en 05 2007...
Page 87: ......
