EDS470 - Bender

System c omponents
Wiring diagram
EDS470-12
US
8
12
A1 A2 k1 k2 k3 k4 k5 k6 k7 k8 k9
1
2
3
4
A1 A2 K1 K2 K3 K4 K5 K6 K7 K8 K9
I∆s
EDS470 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12
MONITOR
ON
ALARM
FAULT
1
0
SLAVE ADDRESS
A4 A3 A2 A1 A0
SLAVE
RS485
TEST
RESET
MASTER
R/-
A B R1 R2 l K12 K11 K10 11 12 14
A B R1 R2 l k12 k11 k10
7
5
6
RS485
9
10
11
11
12 14
1 Power On LED
2 LED ”alarm” lights up when the response value is exceeded in one or
more channels test current through the respective measuring current
transformer > 5 mA).
3 LED ”fault” flashes if during the evaluation of a measuring current
transformer signal
• the measuring current transformer is short-circuited;
• no measuring current transformer is connected or the connecting lead is
interrupted;
• a residual current of > 10 A flows through the measuring current
transformer (refer to FAULT curve about that);
• the measuring current transformer signal cannot be evaluated due to
interferences.
4 DIP switch device settings.
5 LED lights up if RS485 is active and transmits data.
6 Combined test and reset button. Press < 1 sec: Reset, > 2 sec: Test.
7 Alarm LEDs light up when the threshold is exceeded in the respective
channel.
8 Measuring current transformer
9 External TEST / RESET button, with the same function as button (6).
10 Alarm relay switches when a channel has responded (collective message).
11 Terminal block X for connections 1 of the measuring current transformers
12 Short-circuit protective fuse for supply voltage (6A). Protect within the IT
system with two poles.
Attention: keep the common connection between terminal 1 of the EDS470-12
and terminal block X as short as possible. The maximum length is 25 cm for a
cross section of 2.5 mm 2 or 15 cm for a cross section of 1.5 mm 2 . If longer cables
are used, the function of the current transformer monitoring cannot be
guaranteed.
20
TGH 1243E/02.2000