PISA-B-812-B1
PISA-B-812-B4
Apr. 2021 / Rev. 0.1 DS-PISA-B-812-Bx-xx-EN
www.pulspower.com
3 / 20
All parameters are specified at 24Vdc input voltage, 8x5A output currents, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
1.
Intended Use
This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control,
process control, monitoring and measurement equipment or the like.
Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without
additional appropriate safety devices, that are suited for the end-application.
If this device is used in a manner outside of its specification, the protection provided by the device may be impaired.
2.
Installation Instructions
DANGER
Risk of electrical shock, fire, personal injury or death.
– Turn power off before working on the device. Protect against inadvertent re-powering.
– Do not open, modify or repair the device.
– 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.
– Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns.
Obey the following installation instructions:
This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable
parts. If damage or malfunction should occur during installation or operation, immediately turn power off and send unit
to the factory for inspection.
Install the device in an enclosure providing protection against electrical, mechanical and fire hazards. Install the device
onto a DIN rail according to EN 60715 with the input terminals on top of the unit.
Up to eight devices can be connected via two power-bus-bars, where only one device is connected to the power supply.
The power-bus-bars must be long enough to make a connection to all contacts of the devices.
Use an appropriately sized 24V power supply, which can deliver the peak current required to trip the load channels. If
peak currents are too low, the supply voltage for the protection module can no longer be maintained, which results in a
malfunctioning of the protection module.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that
are designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient
temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter
the terminal connection.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed. The
enclosure of the device provides a degree of ingress protection of IP20. The housing does not provide protection against
spilled liquids.
The isolation of the devices is designed to withstand impulse voltages up to 1.5kV according to IEC 60664-1.
The input can be powered from a regulated power supply or a similar DC source.
The input must be powered from a PELV or SELV source in order to maintain a SELV or PELV output. Check for correct input
polarity. The device will not operate when the voltage is reversed.
A disconnecting means shall be provided for the input of the device.
The device is designed as “Class of Protection III” equipment according to IEC 61140.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not
cover ventilation grid!
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase
the 5mm to 15mm in case the adjacent device is a heat source. Between multiple PISA-B modules, no clearance is needed.
The device is designed for altitudes up to 5000m (16 400ft).
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or
surrounding air temperature and is defined 2cm below the device. The device is designed to operate in areas between 5%
and 95% relative humidity.
