83
-
5
15
-
0
00
Rev.
B
45
POWERSUPPLY
#
1
J1-2,3
J1-16
J1-16
J1-16
J1-15
PS_OK
POWERSUPPLY
#
2
J1-2,3
J1-15
PS_OK
SO
POWERSUPPLY
#3
J1-2,3
J1-15
PS_OK
SO
SO
IF_COM
IF_COM
IF_COM
Fig.5-5: Parallel operation with Remote sensing
MASTER
POWERSUPPLY
SLAVE#1
POWERSUPPLY
J1-25
J1-10
P
IPGM
J1-12
J1-23
P
IPGM_RTN
+
V
-
V
+
V
-
V
+S
-S
LOAD
Asshort as possible
Twisted
pair
+S
-S
+S
-S
Twisted
pair
J1-8
J1-12
ToJ1-10
SLAVE#2
POWERSUPPLY
ToJ1-23
SLAVE#2
POWERSUPPLY
+S
+LS
-LS
-S
5.16 DAISY
-
CHAIN CONNECTION
It is possible to configure a multiple power supply system to shut down all the units whena f ault cond
i-
tion occurs in one of the units. When the fault is removed, the syst
em recovers according to its setting
to Safe
-
start or Auto
-
r
e
start mode.
Setup switch SW1, position 5 should be set to its DOWN position to enable the Daisy
-
chain operation.
Other SW1 pos
i
tions can be set according to the application requirements.
If a fau
lt occurs in one of the units, its PS_OK signal will be set to a low level and the display will ind
i-
cate the fault. The other units will shut off and their display will indicate “SO”. When the fault condition
is removed, the units will recover to their las
t setting according to their Safe
-
start or Auto
-
restart se
t-
ting.
Fig.5
-
6 shows connection of three units, however the same connection method applies to systems
with a larger number of units.
5.17 FRONT PANEL LOCKING
The front panel controls can b
e locked to protect from accidental power supply parameter change.
Press and hold the PREV button to toggle b
e
tween “Locked front panel’ and “Unlocked front panel”.
The display will cycle between “LFP” and “UFP”. R
e
leasing the PREV button while one of the
modes
is displayed, s
e
lects that mode.
5.17.1 Unlocked front panel
In this mode, the front panel controls are Enabled to program and monitor the power supply param
e-
ters.
5.17.2 Locked front panel
In this mode the following front panel controls are Disabled
:
-
VOLTAGE and CURRENT encoders.
-
FOLD button.
-
OUT button
The power supply will not respond to attempts to use these controls. The VOLT display will show
“LFP” to ind
i
cate that the front panel is locked.
OVP/ UVL button is active to preview the OVP
and UVL setting.
Use the PREV button to preview the Output Vol
t
age and Current setting or to unlock the front panel.