SERVICE
24
MAGNET POWER SUPPLY SYSTEM 8500
The figure below shows an example of one ramp profile stack. ( Ps. not all 1000 points need to be
programmed empty entries will be ignored.)
The time slot must be given as a multiple of 1.25ms. Between 1.25ms to 1 second. Any value in-
between will automatically be rounded according to formulae:
{time slot}=frac({time}/0.00125)*0.00125
The SW will after the start command update the output current every 1.25m. sec. By means of
interpolation regardless of the programmed time slot value:
In-between the 1.25ms step time a second HW interpolation counter will update the set value for
every 70
ì
s.
The ramp can be starter to run as a single shot “RAMP R”, auto iteratively (auto loop) “RAMP RL”
or HW triggered auto armed “RAMP TW”. For a full documentation on controlling the “Equal time
slot method” please refer to the appendix 2 Ramp Profile Commands.
If synchronisation to an eternal event is required, it is possible to arm the ramp sequence first with
the synchronisation command “RAMP T”. A hardware signal on the trigger input P33 pin 1&2 (10
to 24V) or a “RAMP R” command will start the sequence.
If more power supplies have to be synchronized, one of the supplies has to be appointed as master.
Connecting the master trig output P33 pin 3&4 to the other supplies trig input will start the other
supplies when the master is triggered. A maximum skew of 5
ì
s between the supplies may be
expected. (an external 15V auxiliary supply is needed, as the trig output is an open collector and the
trig input is an opto coupler input.)
DANFYSIK A/S - DK 2630 TAASTRUP - DENMARK.
DOC NO P80303Sk