13
Regulation
Current real value
1V
^=
15A (galvanical insulated)
max. output current: 5mA
Voltage real value
1V
^=
15V
(high resistance insulated)
max. output current: 5mA
Current command value
1V
^=
15A (galvanical insulated)
max. input current: 5mA
READY
This 3 potential-free contacts are closing if the mains supply
is present -> ready for start.
Following conditions must comply with:
1.mains switch in position "1"
2.external on-command - contact between clamp 1 and 2
3.after turn on delay time of contactors K1, K3 and K4
(2 seconds)
Constant current
1. ANALOG INTERFACE X8
(15-pole Harting socket)
2. DIGITAL INTERFACE X9
(15-pole Harting socket)
START
The start signal will be given by a +24V DC impulse on PIN
A2 and initiates the plasma arc.
STOP
The stop signal will be given by a short GND-signal.
<
<
<
A2
A5
C2
A1
B1
B3
C1
FAULT
Floating contact - opens when an overtemperature fault
occurs, when a control voltage is absent or when there is an
arc cut-off (Control-circuit fuses F14/F15/F18).
ARC-FAULT
Floating contact - opens when an arc cut-off has occurred.
1
2
4
3
3. 6-POLE TERMINAL STRIP X10
K1
K3
K4
EIN/ON
SAFETY
EIN/ON
This contact switches the mains supply in the machine on
and off.
SAFETY
If this 3 contacts are closed, the power-modules are insula-
ted from the mains supply.
A2 B2 C2
START +24V
START GND
STOP GND
PLASMA
PLASMA
READY
READY
FAULT
FAULT
reference point GND
current real value 0-10V -> 3-150A
voltage real value 0-10V -> 0-150V
shield connection
current command value
0-10V -> 3-150A
3. CHECK THE REGULATOR-OUTPUTS AND PWM-INPUTS
Control-LED startsignal PWM:
H4 (RTR-B) and LD2
(PWM)
Control-LED output power:
H19
(RTR-B) brightness shows output power
H4 and H19 lights up, if the arc is present
TECHNICAL DATA
GENERAL DISCRIPTION OF INTERFACE
1. CHECK THE SUPPLY VOLTAGES
Control-LED on the regulator pcb. RTR-B:
+ 15 V DC H23
-
15 V DC H21
+ 10 V DC H22
36 V AC H 5
Control-LED on the PWM pcb. (behind RTR-B):
+ 15 V LD1
Measuring of drive supplies
(only when power module is faulty):
4x9,6 V AC on STP3 X6/X7
4x9,6 V AC on STPSP X14/X15
Middle connection is always reverence point
2. CHECK THE REGULATOR INPUTS
Control-LED command value:
H 9 dark
0 V = 3 A
H 9 bright 10 V = 500 A
Control-LED constant current:
H 18
Control-LED startsignal:
H 24 (after starting command)
Control-LED current flow signal:
H 3 (after ignition of the arc)
Mains voltage
Max. current consumption
Fuse protection
Protection class
Switching frequency
Plasma current
Plasma voltage
Duty cycle
Open circuit voltage
Type of cooling
Isolation class
Dimensions (lxwxh)
Weight
3x400 V / 50-60 Hz (+/- 10%)
51 A
63 A
IP 21
25 kHz
3-150 A
0-150 V
150 A / 150 V - 100 %
250 V
AF
H
780 / 660 / 880 mm
206 kg
C4
C5
ARC-FAULT
ARC-FAULT
C1
B2
B1
B4
B3
C3
PLASMA
This signal is generated by a make-contact which closes
when the plasmacurrent flows.
Relay contact datas: 24V/500mA
SERVICE MANUAL FOR PLASMA POWER
SOURCES
