Understanding Master/Slave Input On/Off Combinations; Table 5-3. Input Sequences For Master And Slave Units - Advanced Energy Pinnacle 20 kW Manual

Advanced Energy

UNDERSTANDING MASTER/SLAVE INPUT ON/OFF COMBINATIONS

Unique logic in the Pinnacle power supply lets you power on and off master and slave units
independently of one another. Table 5-3 on page 5-16 lists valid input on and off sequences.
During valid on and off sequences, the master unit "re-scales" the total output; that is, its I/O
signals adjust to accommodate the most recent change in output capability of the combined
units.
Note: You cannot power up a Pinnacle master/slave system if output is on.

Table 5-3. Input Sequences for Master and Slave Units

Acceptable
Sequence
for ...
Powering up the
master unit as a
stand-alone
power supply
Powering up the
master/slave
power supply
system
Powering down
the master unit
as a stand-alone
power supply
5-16
Page 144 of 182
®
Condition Condition
of Master of Slave
Unit's AC Unit's AC
Input
Switching ac ac input
input power power is OFF
ON
Switching ac ac input
input power power is ON
ON
ac input Switching ac
power is OFF input power
ON
ac input Switching ac
power is ON input power
ON
Switching ac ac input
input power power is OFF
OFF
Switching ac ac input
input power power is OFF
OFF
Condition
of Output
Input
Off by
default
(Master ac
input power
is OFF)
Off by
default
(Master ac
input power
is OFF)
Off by
default
(Master ac
input power
is OFF)
Off
Off
Off
Installation
Response (Type of
Fault)
No fault; master unit
can output up to full
power as a stand-alone
unit, or the master is
ready to recognize any
slave unit
No fault; the master
unit re-scales system
output; the system can
output up to the
combined output
capability of the
master and slave units
No fault; the slave
unit waits for the
master unit
No fault; the master
unit re-scales system
output to the
combined output
capability of the
master and slave units
No fault
No fault
5702199-A