MAGNET POWER SUPPLY SYSTEM 7000
29
DANFYSIK A/S - DK 4040 JYLLINGE - DENMARK.
For enabling fast ADC mode, strap ST11 must be short-circuited (close) otherwise it is normal
mode.
Mode
Strap ST11
Fast ADC
Close
Normal Open
(default)
The maximum frequency for the ADC external trigger pulse is 30 Hz.
Trig mode
Pin16 (connector X7)
ADC External trig
Low
1)
Running High
2)
(default)
1)
Short-circuit pin 8 and pin 16 at the connector X7
2)
Pin 16 is high at default
Ps. The fast ADC external trig input and the external trig for the ramp profile share the same
physical port line. Due to this, the external trig for ramp profile option will automatically
be disabled if the fast ADC external trig is enabled.
4.2.7
DC/DC Converter:
A small 100 kHz 5W galvanic isolated push pull converter is provided. It supplies circuits with
two is5V suppliers. Galvanic isolation is used to avoid ground loops.
A voltage mode pulse width modulator, U30 is controlling the push pull converter.
±5V for the ADC is generated from two linear regulators, U23 and U24
+3.3V for the
:
-processor is generated from Low-Noise Ultra Low-Dropout Regulator U26.
4.2.8
Serial Interface:
The SYSTEM 7000 supports serial communication RS232, RS422 and RS485. The default
setting is RS422.
The serial communication circuit consists of U39, U35, U36, U37A, ISO5, ISO6 and ISO9 and
the serial link is optically isolated.
The connector “REMOTE CONTROL” is the serial interface port. For information about pin
description for this connector at the back of the power supply, please refer to chapter 3.6.
The selection between the RS232, RS422 and RS485 mode is done through straps located on
the Display Controller Module. Please refer to chapter 3.6 about strap settings.
