GE Gerapid 2607 User Manual page 19

4.3.4 NEKO control circuit
-X10/11
(+)
[ 8 ]
24 Vdc
(-)
[ 6 ]
-X3
[ 6 ]
C-bank
charging
signalization
[ 7 ]
Closing
STOP relay
Cut-off -X2
contact
[ 10 ]
i.e. HS 10
Tripping
signal
provided
6V...24V
by user !
[ 11 ]
-Q1
ED impulse
coil
•
Firing signal at (-X2 :10/:11) is processed by opto-coupler. Pay attention to the polarity!
•
Closing STOP signal is provided to lock CLOSE command, until capacitors are f ully charged.
•
Be sure that voltage level is between DC 6 V - 24 V and there are no transient spikes (<3 ms) on firing signal. This can
lead to major defect of the NEKO control unit!
•
Maximum duration of the firing command must not exceed ~1 sec. Longer signal might cause NEKO failure! It is rec-
ommended to use one of HS auxiliary c ontacts c onnected in series with firing circuit (-X2 :10). It will automatically c ut off
the firing circuit af ter breaker opening.
Fig. 25 ED coil with internal NEKO control unit
2009-09-02 S47183e rev.03
-X16: NEKO PCB
[ 1 ]
(+)
(-)
[ 2 ]
[ 9 ]
Signals
-K1
[ 10 ]
[ 5 ]
-K2
[ 6 ]
[ 3 ]
(+)
(-)
[ 4 ]
[ 11]
[ 12 ]
36/ _ X _ _ _ _ _
Key position - 3
Key number - 2: With ED c oil and internal NEKO control unit.
Design and specifications are subject to change without notice
Impulse switching
Input circuit for firing signal
C-bank and output circuit
Isolating Transformer
Charging Control
Charging Voltage
Control
Firing signal
control
19