Hypertherm Powermax45 Service Manual - Manual (Page 95)

TroubleshooTing and sysTem TesTs
powermax
45 Service Manual 5-19
Single phase Three phase (Ce) Three phase (CSA)
L
Black (CSA)
Brown (CE)
L1 Brown L1 Black
N
White (CSA)
Blue (CE)
L2 Black L2 White
PE
Green (CSA)
Green/yellow (CE)
L3 Gray L3 Red
PE Green/yellow PE Green
Test 2 – power board voltage checks
With the power ON, use a meter to verify the voltages at the J7 pins (J8 on 400 V CE and 480 V CSA power supplies)
listed in the following table to be certain that the power board is functioning correctly. If any of the values are incorrect,
replace the power board.
CAUTIoN
do not use -VbUS as ground – doing so could destroy the power supply. Instead ground to either the
ground wire clip on the rear panel or to the heat sink as shown below.
Note: All values can be ±10%.
J7 or J8 pin number to
ground
Test
expected value
(200–240 V CSA or
230 V Ce)
expected value
(400 V Ce or 480 V CSA)
19
VACR (rectified AC
line voltage)
1.95 V at 230 line
voltage
2.7 V at 400 line voltage (CE)
2.016 VDC at 480 line voltage (CSA)
21
VBUS (DC bus
voltage)
2.28 VDC at 385 VBUS 2.178 VDC at 560 VBUS (CE)
2.016 VDC at 670 VBUS (CSA)
18
(200–240 and 230 V
only)
IPFC (input current) < 0.1 VDC Not applicable
20 IFB (output current) < 0.1 VDC < 0.1 VDC
22 ITF (transfer current) < 0.1 VDC < 0.1 VDC
25 3.3 VDC 3.3 VDC ±5% 3.3 VDC ±5%
24 5 VDC 5 VDC ±5% 5 VDC ±5%
12 24 V sense pin 2.2 VDC 2.2 VDC
16 Start signal
3.2 VDC closed
0 VDC open
3.2 VDC closed
0 VDC open