PISA11.CLASS2
PISA11-Series
P
ROTECTION
M
ODULE
24V,
4
O
UTPUTS
8.
O
UTPUT
-OK
R
ELAY
C
ONTACT
This relay contact is closed when the input voltage is sufficient and the outputs are not shutdown.
Threshold voltage
typ.
21.4Vdc
Required voltage to power the relay and to close
the relay contact. The outputs must also not be
shutdown.
Contact ratings
max.
30Vdc, 1.0A
Resistive load
max.
30Vac, 0.5A
Resistive load
min.
1mA
at
5Vdc
Galvanic isolation
nom.
500Vac
Test voltage: Signal path to power path
9.
ON/OFF
AND
R
ESET
S
IGNAL
I
NPUT
This signal input is galvanically isolated with an integrated optocoupler and works in the same manner as the reset
and ON/OFF button. The ON/OFF function has no safety feature included.
In a failure mode (outputs have shutdown), the outputs can be turned on again by
applying a voltage for more than 1 second.
12
(
+
)
5.1V
3mA
Inhibit
11
(
-
)
In normal mode (outputs have not shutdown), a short (> 50ms) voltage pulse will turn
all outputs ON or OFF.
The unit will be shipped (factory setting) with the outputs turned-on.
Signal voltage
max.
30Vdc
Signal current
typ.
3mA
Active current limited
max.
6mA
active current limited
Threshold voltage levels
min
6Vdc
Voltages above this level will trigger the inhibit or
max.
10Vdc
reset.
Galvanic isolation
nom.
500Vac
Test voltage: signal path to power path
10.
S
YNCHRONIZATION OF
M
ULTIPLE
PISA
M
ODULES
If multiple PISA modules are used on the same power supply, it is recommended to connect the sync. bus of all
modules together. If one unit shuts down due to the protection function of the input voltage protection circuit
(safeguard), all other modules will shutdown too. This avoids a false interpretation of which output channel caused
the problem. If the sync. terminals are not linked, the module with the highest safeguard protection voltage level
(caused by tolerances) would shutdown
first regardless whether the failure was
caused by this module or not.
1 2 3 4
Outputs
Input
+
- -
sync.
16
15
14
13
12
11
Reset
+
-
OK
PISA11
Input
L1 L2 L3 PE
QT40.241
Power
Supply
Output
+
-
1 2 3 4
Outputs
Input
+
- -
sync.
16
15
14
13
12
11
Reset
+
-
OK
PISA11
1 2 3 4
Outputs
Input
+
- -
sync.
16
15
14
13
12
11
Reset
+
-
OK
PISA11
1 2 3 4
Outputs
Input
+
- -
sync.
16
15
14
13
12
11
Reset
+
-
OK
PISA11
Please note:
If the cause for the shutdown was an over-
current of one individual channel only this
module will shutdown and the other
modules will stay on. In this case the sync.
line has no impact on the other modules.
Feb. 2012 / Rev. 1.3 DS-PISA11.CLASS2 - data sheet -
All parameters are specified at 24Vdc input, 25°C ambient temperature and a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278-0 Germany
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