S47183-e 01/2008
Design and specifications are subject to change without notice
19
4.3.4 NEKO control unit
•
Releasing signal at (-X2 :10/:11) is processed by optocoupler, pay attentions to the polarity !
•
Emergency STOP signal is provided to lock CLOSE command, until capacitors will be charged.
•
Be sure, that voltage level is between 6V…24V and there is no interfere spikes (<3ms) on firing signal. This can lead to
major defect of the NEKO control unit!
•
Maximum duration of the firing command must not exceed ~1sec. Longer signal will lead to NEKO failure!
It is highly
recommended to use an internal auxiliary contact in serial connection with firing circuit (-X2 :10/:11). It will automatically
cut off the firing circuit after contacts are opened.
Fig. 25 ED coil with internal NEKO control unit
Output signal
-bank charged
-X10, 11
-X10, 11
Charging control
Voltage control
Firing circuit
Pulse circuit
Insulating Transformer
Firing signal control
and transforming
Meldeschalter
Power supply
24VDC
Q1
„ED coil”
Firing signal
6-24V
+
-
+
-
-X16
3
4
5
6
9
10
1
2
11
12
-X3
-X3
-X2
-X2
:8
:6
:6
:7
:10
:11
Emergency
STOP signal
Capacity and firing thyristor
Key position - 3
Key number – 2: With ED coil and internal NEKO control unit.
36/ _ X _ _ _ _ _
