Voltech AT3600 User Manual page 416

S
AFETY SYSTEMS
Principle of Operation
The cable carries 3 pairs of color-coded wires. Each pair must be linked together by the
safety system before the AT3600 will operate a high voltage test. If any one of the three
pairs is becomes un-linked during a test, the AT3600 very quickly switches off any
high voltage that is being produced.
There are three pairs of wires in order to provide the multiple redundancy required by
various international safety standards.
Cable Schematic.
Function
Primary power to
the high voltage
generators is passed
through pins 3 and 7
Secondary control
logic.
Secondary
switching device. (A
6k8 resistor is fitted
in series with pin 2).
Screen
For full details of the Voltech Safety Interlock cable, request a copy of the Safety
Interlock Cable Installation Guide, Voltech part number 98-078.
P 10.6.
AGE
AT3600
9-pin d-type
3
7
No
Connection
No
Connection
5
6
2
9
Screen
VPN 98 - 024
V
OLTECH
Safety Light Connection to safety
Curtain system.
Yellow Main power-breaking
relays (Final Switching
Blue
Device) of the safety
system. The black link
is used to series 2
Black
relays, if present.
Black
Green Monitoring or auxiliary
relay.
Black
Red Secondary Control
Element.
White
No
Connection
AT3600 U M
SER ANUAL
S S
AFETY YSTEMS