83
-
5
15
-
0
00
Rev.
B
44
CAUTION
Make sure that the c
onnection between
–
V terminals is reliable to avoid disconnection
during operation. Disconnection mayc ause damage to the power supply.
NOTE
With local sensing it is important to minimize the wire length and resistance. Also the positive and
negative wireres istance shouldbe
close as possible to each other to achieve current balance b
e-
tween powers upplies
*OVP to its maximum value
*AST On
*OUT On
*Foldback protection Off
c) The Master and Slave modes are stored in the power su
p
ply EEPROM when the AC power is turne
d
off. The sy
s
tem will return to the Master/Slave mode upon re
-
application of AC power.
5
. CURRENT display accuracy
In the advanced parallel mode, the Master unit calculates the total current by multiplying the Masterou
t
put
current by the number of Slave
units. In this method, the CURRENT display accuracy is 2% +/
-
1 count. In
cases that higher accuracy is required, it is recommended to use the basic parallel oper
a
tion mode.
6.
To release units from Slave mode
Slave units can be released using the followin
g procedure:
a) Depress FINE button for 3 seconds. The Master/Slave configuration will be displayed on the
CURRENT display.
b) Select H1 mode using the CURRENT encoder.
c) Depress FINE button again or wait 5 seconds.
d) Turn the AC power Off to store the n
ew setting.
e) After exiting from Slave operation the unit’s parameters will be set to:
*Programmed Voltage to zero
*Programmed Current to zero
*UVL to zero volts
*OVP to its maximum value
*AST OFF
*OUT OFF
*Foldback protection
OFF
*Locked Front Panel
Fig.5-4: Parallel connection with local sensing
MASTER
POWERSUPPLY
SLAVE#1
POWERSUPPLY
J1-25
J1-10
P
IPGM
J1-12
J1-23
P
IPGM_RTN
+
V
-
V
+
V
-
V
LOAD
Asshort as possible
Twisted
pair
+S
-S
J1-8
J1-12
ToJ1-10
SLAVE#2
POWERSUPPLY
ToJ1-23
SLAVE#2
POWERSUPPLY
-S
-LS
+LS
+S
+LS
-LS