200
R
EV
9
A
MERICAN
M
AGNETICS
, I
NC
.
A
PPENDIX
: Q
UENCH
I/O C
ONNECTOR
E
XTERNAL
Q
UENCH
D
ETECTION
I
NPUT
The external quench detection input allows the user to facilitate his own
quench detection circuitry, the output of which is wired to the Model 430
Programmer. The external input overrides the internal quench detection
function of the Model 430 Programmer and cannot be disabled.
CAUTION
The external quench detection input is a dry contact input,
not galvanically isolated from the Model 430 Programmer
internal circuitry. To avoid noise problems and potential
damage to the Model 430 Programmer, it is very important
that the dry contacts to which the input is connected be
galvanically isolated from any external circuitry.
It is recommended that the external quench detection input be driven by
the contacts of a low level dry contact relay, which will galvanically
isolate the input from all other circuitry.
When the external quench detection input pins (pins 4 and 5 of the
Quench I/O connector) are shorted together, it is the same as if an Model
430 Programmer internal quench detection occurred. Refer to page 123
for details.
NOTE
The Model 430 Programmer takes approximately 600
microseconds from the time it detects the external quench input
to execute the quench condition process. Refer to page 124 for
more information.
E
XTERNAL
R
AMPDOWN
I
NPUT
When enabled
2
, the external rampdown input initiates a rampdown of
the magnetic field of the magnet when triggered.
CAUTION
The external rampdown input is a dry contact input, not
galvanically isolated from the Model 430 Programmer
internal circuitry. To avoid noise problems and potential
damage to the Model 430 Programmer, it is very important
that the dry contacts to which the input is connected be
galvanically isolated from any external circuitry.
It is recommended that the external rampdown input be driven by the
contacts of a low level dry contact relay, which will galvanically isolate
the input from all other circuitry.
When the external rampdown input pins (pins 6 and 7 of the Quench I/O
connector) are shorted together for more than 10 milliseconds, the
Model 430 Programmer enters external rampdown mode. If the magnet
Summary of Contents for 430
Page 2: ......
Page 16: ...XVI REV 9 AMERICAN MAGNETICS INC FOREWORD SAFETY SUMMARY ...
Page 28: ...12 REV 9 AMERICAN MAGNETICS INC INTRODUCTION OPERATING CHARACTERISTICS ...
Page 64: ...48 REV 9 AMERICAN MAGNETICS INC INSTALLATION POWER UP AND TEST PROCEDURE ...
Page 208: ...192 REV 9 AMERICAN MAGNETICS INC SERVICE RETURN AUTHORIZATION ...
Page 248: ...232 REV 9 AMERICAN MAGNETICS INC APPENDIX SHORT SAMPLE MODE ...
