MAGNET POWER SUPPLY SYSTEM 7000
19
DANFYSIK A/S - DK 4040 JYLLINGE - DENMARK.
The SW will after the start command update the output current every 2.5ms. By means of
interpolation regardless of the programmed time slot value:
The ramp can be initiated to run as a single shot “RAMP R”, auto iteratively (auto loop) by
software command “RAMP R,L” or HW triggered auto armed “RAMP T,W”. For a full
documentation on controlling the “Equal time slot method” please refers to
ApBCPsw1a.doc
Software commands
.
If synchronization to an eternal event is required, it is possible to arm the ramp sequence first
with the synchronization command “RAMP T”. A hardware signal on the trigger input X7 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 X7 pin 3&4 to the other supplies trig input will start
the other supplies when the master is triggered. A maximum skew of 2.5ms 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.)
External input and output triggers are located on the back of the SYSTEM 7000, see overview
of the back of SYSTEM 7000 in
chapter 4.1.1
Hint: When adding values to the ramp profile, the enter point (start) and exit point (stop) shall
be the same in order for running the ramp sequence in loop. Otherwise there will be an
unwanted level between the exit point for the first ramp and the enter point for the next
ramp as the ramp is miscalculated. Besides, the output current should set to zero before
start running the ramp.
In order to run ramp profile correctly, following steps must be performed
•
Clear the stack by typing RAMPSET C
•
Enter the data points, type R 0.xxxxx and press enter. Repeat this until the last data
point has been entered.
•
Save the data points by typing R S
•
Set the output current to zero by typing WA 0 or DA 0,0
•
Turn on the MPS by typing N
•
Run the ramp in loop by typing RAMP R,L
x is a number from 0 to 9
Description of how to set up and run the ramp profile, refer to the
ApBCPsw1a.doc Software
command
3.7.3
SW limits
The limits of the “Equal time slot method” ramp profile SW are:
-
The set value must be given in a floating point representation normalized to
1.00000.
-
The time slot may be between 0.0250 to 1 second given in a floating point
representation normalized to 1.0000.
-
Maximum numbers of stacks = 1
-
Maximum number of time slots in a stack = 512
