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User's Manual (MUT)
A3486 3Phase 400Vac to 2x2kW/1x4kW 48Vdc
08/10/2007
10
NPO:
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00120/04:A3486.MUTx/10 A3486_REV10.DOC
35
18
2.4.3.2 CHANNEL INTERLOCK
This section allows to enable/disable the module output and includes:
1 AMP 280372-2 type connector
1 Bistable switch (ENABLE/DISABLE)
1 red LED
In order to enable the output channel the switch must be set on “ENABLE”, then the
Interlock can work in two ways:
PASSIVE OPERATION: it is necessary to short circuit pin 1 (“GND”, the first from left to
right) with pin 2 (“K=katode”), and pin 3 (“A=anode”) with pin 4 (“VCC”).
ACTIVE OPERATION: it is necessary to send a voltage level (for example a TTL; the
recommended current is about 10 mA) between pin 2 = katode and pin 3 = anode (high =
interlock disabled, the channel can be turned on; low = interlock enabled, the channel
cannot be turned on), leaving pin 1 and pin 4 disconnected.
The LED is ON when the Board is enabled.
GND
K
VCC
A
330 Ohm
~10 mA
Fig. 2.6 – Interlock diagram
2.4.3.3 CHANNEL STATUS
This section includes four LEDs:
ON LED (red): lights up as the channel is on.
