2.
On the AC Power board (Figure IV-3), remove the cover from the two fuses (F3 for
supply 1 and F4 for supply 2) and replace the fuses according to the Table IV-4.
Table IV-4. Input Voltage Conversion Fuse Values for the DIGITEL MPC.
F3/F4 — 100/120 V
F3/F4 — 200/240 V
100 mA HV Card
2.5A, 250V, slo-blo, IEC
p/n 639627
1.25A, 250V, slo-blo, IEC
p/n 636475
500 mA HV Card
6.3A, 250V, slo-blo, IEC
p/n 636477
4.0A, 250V, slo-blo, IEC
p/n 639623
3.
Replace the cover on each fuse.
4.
On the AC Power board (Figure IV-3), pull out the input voltage connectors and
reconnect them to appropriate voltage according to the Table IV-5.
Table IV-5. Input Voltage Conversion Connectors for the DIGITEL MPC.
100/120 V
200/240 V
supply 2 input
J406
J407
supply 1 input
J408
J409
aux supply input
J404
J405
5.
Replace the top cover of the MPC and reconnect power.
Output Voltage Selection Procedure
1.
Disconnect power and remove the top cover.
2.
Move the spade lug jumper (Figure IV-3) located on the secondary tap of the high
voltage transformer to appropriate connection.
2.1.
5600 VDC for the upper connection
2.2.
7000 VDC for the lower connection
3.
Replace the top cover and plug in the DIGITEL.
4.
Remove the high voltage cables.
5.
Turn on the DIGITEL.
6.
Go to the DIAGNOSTICS menu and select CALIBRATION to calibrate the unit.
NOTE: Calibration calibrates the output current and automatically informs the DIGITEL what
output voltage the high voltage transformer is set to (for supply 1 and 2).
Voltage Polarity Configuration
The DIGITEL MPC can be configured for positive or negative voltage polarity. Use the
following procedure to change the voltage polarity.
WARNING: Voltages up to 7000V are present in the DIGITEL MPC. Turn off power and
disconnect power cord before performing any service procedures.
1.
Turn off power to the MPC and remove its power cord.
Digitel MPC Manual
Page 57 of 72
