SERVICE
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MAGNET POWER SUPPLY SYSTEM 8500
3.3.4.
Software Profile Programming.
The RAMP PROFILE software is an option that can be ordered with the power supply or be added
to a present system. No additional hardware is needed.
With the ramp profile SW, it is possible to download and run a pre defined ramp sequence that the
output current must follow. The ramp sequence can be programmed in three quite different methods.
A) Arbitrary point method; B) Equal timeslot method; C) Auto Slew Rate Ramp Profile method.
If the power supply is delivered with the software ramp profile option, then all three methods will
be available, but only one method can be used at a time.
The examples below are shown for a uni polar power supply. For bipolar supplies, the output current
may also be set negative. (From software version SCC108)
Method A) From software version SCC100
Method B) From software version SCC108
Method C) From software version SCC113
3.3.4.1. Arbitrary point ramp profile method.
With the”Arbitrary point method”, it is possible to download up to fifteen independent points each
generating a ramp line (through interpolation). This profile must be stored in one of the 15 available
stacks.
Each ramp point consist of a stack number, a starting point (current set value, normally the previous
end point), an end point (current set value) and a time value for reaching the given end point.
Eg.
Command:
WSA' sp' stack, start, stop, time 'cr'
To use the Arbitrary point method at least the following steps must be performed:
- Clear the stack “CSS [parameter]”,- Program the stack “WSA [parameter]”,- Set the speed
“SPEED [parameter]”, -Set the attenuator “MULT [parameter]”, -Start the stack “TS
[parameter]”, -Read the status of the running stack “S2".
Please refer to the Appendix 2 “SW2 Ramp Profile Commands” for full instructions.
The figure shows an example of one ramp profile stack. ( Ps. not all 15 points need to be
programmed - empty entries will be ignored.)
DANFYSIK A/S - DK 2630 TAASTRUP - DENMARK.
DOC NO P80303Sk