AMETEK CW-M - Manual (Page 44)

Elgar CW-M Series
5-4 M161570-01
5.1 PARALLEL AND MULTIPHASE OPERATION
Follow the instructions in Section 3.8, Section 3.9, and Section SECTION 4
to set up paralleled or multiphase units.
 Turn on the slaves prior to the master unit. If the master is tuned on first,
it will initialize in a fault condition, and it will need to be reset.
If a fault occurs, the fault light on the unit with the fault and the fault light
on the master will light. Once the cause of the fault has been corrected,
toggle the OUTPUT ON/OFF/RESET switch on the master to reset all of
the units.
 The unit designated as the phase and current master controls the
OUTPUT ON/OFF/RESET switch and the V RANGE HIGH/LOW switch.
 The Voltage LED, Current LED, current setting, and frequency setting
user controls have no functionality on current slaves (parallel units).
 The phase master controls the range HIGH/LOW function for all units.
However, to display the correct voltage of the output on phase slaves, set
the V RANGE switches to match the phase master. The OUTPUT
ON/OFF/RESET switch positions of the slaves do not matter. The master
controls all units, and its LED indicates the state of the system.

Phase slaves display their phase angle instead of frequency. The phase
master displays the system frequency.

Each unit in the configuration monitors and displays its own load current.
Voltage is displayed only on the master; voltage is blanked out on the
current slaves.
 Voltage of phase slaves can be adjusted independently of the master,
from 0V RMS to approximately 20% of full scale above the master (but
not exceeding the full-scale range).