PISA11
PISA11-Series
P
ROTECTION
M
ODULE
24V, 4 O
UTPUTS
P
ROTECTION
M
ODULE
One Input and Four Current Controlled Outputs
Ensures Sufficient Supply Voltage for Critical Loads
even in the Event of an Fault
Protects Small Cable Sizes against Overload
Hassle-free Turn-on of Loads with Large Input
Capacitors
NEC Class 2 Compliant (1A and 2A Model)
Wide Temperature Range between -25°C and +70°C
On/Off Function of Outputs
Compact Design, Width only 45mm
Remote Monitoring and Control Functions
3 Year Warranty
G
ENERAL
D
ESCRIPTION
This protection module fulfills two basic functions. First it
distributes the current of a large power source to four lower
current output channels and therefore allows for smaller
wires to be used. The second function is to permit only so
much current on the outputs that the input voltage of this
unit (which corresponds to the output voltage of the power
supply) does not fall below 21V.
This ensures a safe and an uninterrupted supply voltage for
sensitive equipments, such as PLCs, controls or sensors, when
they are connected directly to the same power supply as the
PISA module. Less critical loads that are not affected to short
voltage interruptions or that could even be the cause of a
fault on the 24V power supply are connected to one of the
four
current
PLC, controls
DC 24V
controlled
(sensitive loads)
Power
PISA Protection Module
Supply
output
A1
Motor 1
channels of the
Relays, Solenoids
A2
PISA module.
A3
Displays
A4
Safeguard
Motor 2
S
HORT
-
FORM
D
ATA
Input voltage
Input voltage
range
Input current
Number of outputs
Output currents
DC 24V
18 - 30V
typ. 43mA
4
fixed between
1A and 12A
typ. 21.4V
At no load
See order
information
Input voltage
protection levels
Temperature range -25°C to +70°C
Operational
-40°C to +85°C
Storage
Type of current
Active current limitation followed
limitation
by a shutdown
Dimensions
45x75x91mm *) WxHxD
*) Add 13mm in depth for signal connector.
O
RDER
N
UMBERS
Protection
module
Output Ratings
PISA11.401
1A, 1A, 1A, 1A
PISA11.402
2A, 2A, 2A, 2A
PISA11.403
3A, 3A, 3A, 3A
PISA11.404
4A, 4A, 4A, 4A
PISA11.406
6A, 6A, 6A, 6A
PISA11.410
10A, 10A, 10A, 10A
PISA11.203206
3A, 3A, 6A, 6A
PISA11.206212
6A, 6A, 12A, 12A
M
ARKINGS
IND. CONT. EQ.
UL 508
UL 60950-1
UL 2367
ATEX
IEC 60950-1
II 3G EX nA nC IIC T4
EMC, LVD
Please note:
An additional, NEC Class 2 optimized module
(PISA11.CLASS2), can be found in a separate datasheet.
Class I Div 2
Marine
May 2014 / Rev. 1.7 DS-PISA11 - 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
1/23
PISA11
PISA11-Series
P
ROTECTION
M
ODULE
24V, 4 O
UTPUTS
I
NDEX
Page
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Intended Use .......................................................3
Product Description.............................................3
Installation Requirements...................................3
Input ....................................................................5
Outputs ................................................................6
Current Limitation and Shutdown Behavior......7
Connecting Capacitive Loads to the Outputs ....9
Output-OK Relay Contact .................................11
ON/OFF and Reset Signal Input ........................11
Synchronization of Multiple PISA Modules .....11
Functional Diagram...........................................12
Back-feeding Loads ...........................................12
Power Losses......................................................13
Reliability ...........................................................13
Front Side and User Elements...........................14
Page
16. Terminals and Wiring....................................... 15
17. Input Wire Sizes................................................ 15
18. Output Wire Sizes............................................. 15
19. EMC ................................................................... 16
20. Environment ..................................................... 17
21. Protection Features .......................................... 18
22. Dielectric Strength............................................ 18
23. Approvals .......................................................... 19
24. Read-out of the Software Revision Level ........ 20
25. Physical Dimensions and Weight ..................... 21
26. Accessory........................................................... 21
26.1. ZM3.WALL Wall Mounting Bracket .......21
27. Various Measurement Results.......................... 22
The information presented in this document is believed to be accurate and reliable and may change without notice.
The housing is patent by PULS (US patent No US D442,923S).
No part of this document may be reproduced or utilized in any form without permission in writing from the publisher
(PULS GmbH). This also applies to all kinds of electronic publishing.
T
ERMINOLOGY AND
A
BREVIATIONS
DC 24V
A figure displayed with the AC or DC before the value represents a nominal voltage with
standard tolerances (usually ±15%) included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)
24Vdc
A figure with the unit (Vdc) at the end is a momentary figure without any additional
tolerances included.
May 2014 / Rev. 1.7 DS-PISA11 - 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
2/23
PISA11
PISA11-Series
P
ROTECTION
M
ODULE
24V, 4 O
UTPUTS
1. I
NTENDED
U
SE
This device is designed for installation in an enclosure and is intended for the general use such as in industrial control,
office, communication, and instrumentation equipment.
Do not use this protection module in equipment, where malfunction may cause severe personal injury or threaten
human life.
This device is designed for use in hazardous, non-hazardous, ordinary or unclassified locations.
2. P
RODUCT
D
ESCRIPTION
This protection module fulfills two basic functions. First it distributes the current of a large power source to four lower
current output channels and therefore allows for smaller wires to be used. The second function is to permit only so
much current on the outputs that the input voltage of this unit (which corresponds to the output voltage of the power
supply) does not fall below 21V. This ensures a reliable supply voltage for sensitive equipments, such as PLCs, controls
or sensors, when they are connected directly to the same power supply as the PISA protection module.
The protection module has one 24V input and four output channels to which the current is distributed. Each output
channel is equipped with a redundant over-current protection, which avoids that wires will be overloaded. All four
output channels will shutdown simultaneously, if the current of one individual channel or the maximum allowed
current for the protection module is exceeded.
A safeguard circuit in the input stage of the PISA module works like a valve. It permits only so much current that the
input voltage does not drop below 21V. In case the input voltage would fall below this value (e.g. due to overloads,
too small of a power supply or high inrush currents such as from starting a motor), all four output channels will be
actively current limited and will shutdown after a certain period of time.
A typical wiring configuration is shown below. All sensitive loads are connected directly to the power supply. If
needed, these load circuits can be protected with standard circuit breakers or fuses. Loads which are less sensitive to
voltage dips or interruptions or which are the source
of the voltage drop themselves are connected to the
PLC, controls
DC 24V
(sensitive loads)
output of the PISA protection module.
Power
PISA Protection Module
Supply
A1
A2
A3
A4
Safeguard
Motor 1
Relays, Solenoids
Displays
Motor 2
3. I
NSTALLATION
R
EQUIREMENTS
This protection module is suitable for DIN-rail mounting. Use DIN-Rails according to EN 60715 or EN 50022 with a
height of 7.5 or 15mm.
The protection module can be used with any regulated 24Vdc power supply. If the power source can deliver more than
40A continuous, the PISA module shall be equipped with an external input fuse (e.g. 30/32A). The power capability
and performance of the power supply can limit the output characteristics of the PISA module.
Make sure that the input voltage polarity is correct before applying the input voltage.
Do not connect batteries to the outputs of the PISA11 module.
This device may only be installed and put into operation by qualified personnel.
The unit does not contain serviceable parts.
If damage or malfunction should occur during operation, immediately turn power off and send unit to the factory for
inspection.
May 2014 / Rev. 1.7 DS-PISA11 - 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
3/23
PISA11
PISA11-Series
P
ROTECTION
M
ODULE
24V, 4 O
UTPUTS
This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do
not cover ventilation grid.
The standard mounting orientation is input terminals on the bottom and output terminals on the top. Do not use the
unit in other mounting orientations.
Keep the following installation clearances:
- Top and bottom: min. 40mm on top, 20mm on the bottom
- Left and right:
min. 0mm if the total output current of the PISA module is less than 15A
min. 6.4mm if the total output current is equal or higher than 15A and the ambient temperature
is between 45°C and 60°C.
min. 6.4mm if the ambient temperature is above 60°C (except for PISA11.401, PISA11.402 and
PISA11.403).
A high voltage drop between the power supply and the protection module might cause a malfunction. It is not
recommended to use wires longer than 2x2m (for 2.5mm
2
or AWG14 wires) or 2x4m (for 4mm
2
or AWG12 wires) to
avoid undesired undervoltage conditions on the input of the protection module.
At ambient temperatures above 50°C and output currents higher than 15A (sum of all four channels), do not use a
wire size smaller than 2.5mm
2
(or AWG14) and use wiring scheme Fig. 3-2.
Use only regulated PULS power supplies to meet the conducted low frequency interference requirements when used in
marine applications according to the GL regulations (section 20 of the GL regulations).
Fig. 3-1
Standard wiring scheme
Fig. 3-2
Wiring scheme for ambient temperatures above
50°C and output currents above 15A
+
-
PLC, Controls
(sensitive loads)
+
-
PLC, Controls
(sensitive loads)
PISA
Protection Module
24V
Power
Supply
+
+
-
-
Recommended
Wire:
max. 2x4m, 4mm
2
or 2x2m, 2.5mm
2
PISA
Protection Module
24V
Power
Supply
+
Load
4
-
+
Load
3
-
+
Load
2
-
+
Load
1
-
+
+
-
-
+
-
-
Output 1
Output 2
Output 3
Output 4
+
Load
4
-
+
Load
3
-
+
Load
2
-
+
Load
1
-
+
-
-
Output 1
Output 2
Output 3
Output 4
Distribution Node
Distribution Node
WARNING
-
-
-
-
-
-
Risk of electrical shock, fire, personal injury or death.
Turn power off before working on the device. Protect against inadvertent re-powering.
Make sure that the wiring is correct by following all local and national codes.
Do not modify or repair the unit.
Do not open the unit.
Use caution to prevent any foreign objects from entering the housing.
Do not use in wet locations or in areas where moisture or condensation can be expected.
Notes for use in hazardous location areas:
The units are suitable for use in Class I Division 2 Groups A, B, C, D locations.
The units are suitable for use in Group II Category 3 (Zone 2) environments and are evaluated according to EN 60079-
0:2009 and EN 60079-15:2010.
WARNING EXPLOSION HAZARDS!
Substitution of components may impair suitability for this environment. Do not disconnect the unit or operate the
reset button unless power has been switched off or the area is known to be non-hazardous. The signal-connector may
not be used in hazardous location areas unless additional measures are met to avoid an unintended disconnection
(e.g. an additional mechanical fixation). The connection must meet the requirements of the EN 60079-15:2010. A
suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the
requirements of the EN 60079-15:2010.
May 2014 / Rev. 1.7 DS-PISA11 - 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
4/23
PISA11
PISA11-Series
P
ROTECTION
M
ODULE
24V, 4 O
UTPUTS
4. I
NPUT
Input voltage
Input voltage range
nom.
-
max.
typ.
typ.
DC 24V
18Vdc – 30Vdc
30Vdc
21.4Vdc
270ms
±25%
Absolute maximum continuous input voltage with no
damage to the PISA module
Required input voltage for turning-on the outputs
Period between applying the input voltage and turning
on the outputs. All outputs will be turned-on at the
same time.
Below this voltage level, outputs will shutdown.
Stand-by current with no load current on the outputs
Turn-on voltage
Turn-on delay of outputs
Input voltage protection level
*)
Stand-by input current
*)
min.
max.
typ.
21.0Vdc
21.8Vdc
43mA
Voltage dips below this value can occur for maximal 200μs.
May 2014 / Rev. 1.7 DS-PISA11 - 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
5/23
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