AMETEK CW-P - Manual (Page 38)

Installation Elgar CW-P Series
2-16 Operation Manual
2.8.3 Sync Output Pulse
• Set direction of Clock to ‘OUT’ (see Section 5.3.9).
• Sync can be programmed relative to zero to positive crossing of output sinewave.
Waveform amplitude typically 5V. Pulse width typically 10 microseconds. Signal
shall start with a zero volt to positive voltage edge, ±100
µS.
• Programming range is 0 to 359 degrees of lag. Resolution 1 degree.
• Output impedance is typically less than 1k ohm.
2.9 Master/Slave Configurations
The CW-P series programmable power supply can be paralleled to achieve higher
power. One, two, or three phase(s) can be paralleled to a depth of two units per phase.
A given phase will have one “Master” and one or more “Slaves.” The master and slave
require special cables (two) between them. The outputs must be connected together
with equal gauge and length power leads, the sense leads must be connected on the
master, and each unit requires special programming. Programming of the units is
performed from the front panel through the menu systems, or through the GPIB/
RS-232 command interface. Once a unit is configured to be a slave, its command
interface is not to be used when load wiring is connected.
When a multi-phase master/slave configuration is configured, the only GPIB/RS-232
connected unit is to be the A phase master. Attempting to control any other units in the
array is specified as an illegal operation, and the results are undefined and potentially
destructive. The command interfaces of a slave are allowed to remain operational for
the purpose of returning the unit to a standalone or different slave configuration.
Note: Remove load wiring before reconfiguring a slave unit via the menu or command
interfaces.
The CW-P series power supplies are configured for master/slave operations in the
following order:
1. Disconnect load wiring to the individual CW power supply.
2. Disconnect any master/slave wiring (M/S IN, M/S OUT, and Analog Slave cables).
3. Ensure that source mains are connected and power up the CW.
4. Through the front panel menu system or through the command interface, specify
the location of the CW in the master/slave matrix. See Sections 3.9.1 and 3.9.2 for
examples.
5. Perform steps 1-3 for all CW units in the matrix.