PISA11.CLASS2
PISA11-Series
P
ROTECTION
M
ODULE
24V,
4
O
UTPUTS
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.
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. 6.4mm if the ambient temperature is above 60°C.
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.
Fig. 3-1
Wiring scheme
24V
Power
Supply
PLC, Controls
(sensitive loads)
-
-
+
+
+
-
PISA
Protection Module
Output 1
+
-
-
Output 2
Output 3
Output 4
4/19
Distribution Node
Recommended
Wire:
max. 2x4m, 4mm
2
or 2x2m, 2.5mm
2
Load
4
+
-
Load
3
+
-
Load
2
+
-
Load
1
+
-
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 unit is suitable for use in Class I Division 2 Groups A, B, C, D locations.
The unit is suitable for use in Group II Category 3 (Zone 2) environments and is evaluated according to the 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.
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.
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