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PISA11.CLASS2

PISA11.CLASS2
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PROTECTION MODULE 24V, 4 OUTPUTS PROTECTION MODULE One Input and Four Current Controlled Outputs NEC Class 2 Compliant 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 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 GENERAL DESCRIPTION SHORT-FORM DATA This protection module fulfills two basic functions. First it distributes the current of a large (non NEC Class 2) power source to four NEC CLASS 2 output channels and therefore allows for a simpler wiring method and easier approval process of the entire machine. 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. Input voltage Input voltage range Input current Number of outputs Output currents This ensures a safe and an uninterrupted supply voltage for sensitive equipments, such as PLCs, controls or sensors, when they are connected DC 24V Non NEC CLASS 2 Load Power directly to the Supply PISA Protection Module same power A1 NEC CLASS 2 Circuit 1 NEC CLASS 2 Circuit 2 A2 supply as the NEC CLASS 2 Circuit 3 A3 PISA module. NEC CLASS 2 Circuit 4 A4 Less critical Safeguard 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 NEC CLASS 2 output channels of the PISA module. ORDER NUMBERS Protection module 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. MARKINGS 4x NEC CLASS 2 outputs May 2014 / Rev. 1.7 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

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS 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. 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...

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS 1. INTENDED USE 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. PRODUCT DESCRIPTION This protection module fulfills two basic functions. First it distributes the current of a large power source to...

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS 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....

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS 4. INPUT Input voltage Input voltage range Turn-on voltage Turn-on delay of outputs Input voltage protection level *) Stand-by input current *) ±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 Voltage dips below this value can occur for maximal...

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PROTECTION MODULE 24V, 4 OUTPUTS I 6. CURRENT LIMITATION AND SHUTDOWN BEHAVIOR The PISA11 protection module comprises one common limitation and switching element for all four outputs. In a protection event, all four outputs limit the current or shutdown at the same time. The following reasons can cause a limitation of the output currents or a shutdown of the output channels: 1) The output current of one or more output channels was too high. 2) The sum of the output current of all four output channels was exceeded. 3) The outputs needed to be shutdown in order to maintain sufficient input...

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS Shutdown behavior to avoid under-voltage situations on the supply voltage A further limitation of the output current activates when the supplying power source can not deliver enough current to support all loads without bringing the power source into overload followed by a voltage drop. In such an event, the voltage dependent current limitation of the input stage of the protection module is activated (safeguard circuit). This safeguard circuit acts like a valve only permitting so much current so that the supply voltage does not fall below 21V....

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PISA11.CLASS2 PROTECTION MODULE 24V, 4 OUTPUTS 7. CONNECTING CAPACITIVE LOADS TO THE OUTPUTS Large input capacitors of drives, monitors or other similar loads can result in an unintended shutdown of the module when trying to turn-on such loads. This especially can occur after a reset or by turning on a load via the push button or the external signal input. The PISA protection module is designed to be exceptionally compatible with such types of loads. The module can turn-on as much capacitance as possible and comprises several different protection mechanisms to protect against an unintended...

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