Tweco Merlin 6000 Master PS - Manual (Page 34)

INSTALLATION PROCEDURES 3-16 Manual 0-2568
2. Connect the other end of the cable to the Gas Con-
trol Option rear panel.
NOTE
Refer to the Gas Control Instruction Manual 0-
2477 for more information on the GS3000 Gas
Control Option.
Cable From
Gas Select Option
GAS CONTROL
Connector (J63)
A-01508
OUTP UT OUTPUT TO TO CON TROL CONTROL
MOD ULE MODULE
AIR AIR PLAS MA PLASMA INPU T INPUT
N 2 PLAS MA PLASMA INPU T INPUT
O 2 PLAS MA PLASMA INPU T INPUT
PLAS MA G AS PLASMA GAS
Ar/H Ar/H 2 PLAS MA PLASMA INPU T INPUT
Figure 3-24 Optional Gas Control Interface
Connection
3.13 Master/Slave Parallel Cable
Connection
The interface between the Master and Slave Power Sup-
ply is made through the Parallel Cable. Connect one end
of the cable to the rear of the Master Power Supply at J54.
The other end connects to the rear of the Slave Power
Supply at J15.
3.14 Lifting Options
WARNING
Do not lift a power supply equipped with a cylin-
der rack running gear.
The recommended method for lifting the power supply
is to use a forklift per the following procedure:
1. Approach from the front or rear of the unit.
2. Place the forks between the rear wheels or the
front casters.
3. Center the forks under the unit and carefully
check for proper balance before lifting.
Approach From Front Or Rear
Do Not Lift From Sides
A-01499
Figure 3-25 Lifting the Power Supply
3.15 Pilot Resistor Adjustment
This Sub-Section applies only to the following Master and
Slave Power Supplies:
• Merlin 6000 Master Power Supplies with the revi-
sion letter 'C' or later on the data tag
• Slave Power Supplies with the revision letter 'E' or
later on the data tag
• Slave Power Supplies that have been retrofitted with
Pilot Resistors
Master and Slave Power Supplies, as noted above, con-
tain adjustable pilot resistor circuits. For output current
below 250A, only the pilot circuit in the Master Power
Supply is activated. For output current above 250A the
Master and Slave Power Supply pilot circuits are acti-
vated.