PULS PISA-M-408 Electronic Circuit Breaker Instruction Manual

PISA-M-408, 24 / 12 V, 8 A, 480 W Electronic Circuit Breaker
PULS GmbH, Elektrastr. 6, 81925 Munich
+49 89 9278 0 www.pulspower.com

 Doc. ID: PU-466.015.06-xxA (2024-06-19-JM2)

Symbols Explained

| WARNING: Risk of serious injury or death
---|---
| NOTE: Additional information
| Action step
| Positive result
CCB| Channel Control Button

Read this first!

Before operating this device, please read this manual thoroughly and retain this manual for future reference. This device may only be installed and put into operation by qualified personnel. If damage or malfunction should occur during operation, immediately turn power off and send device to the factory for inspection. The device does not contain serviceable parts. The information presented in this document is believed to be accurate and reliable and may change without notice. For any clarifications the English translation will be used.

WARNING: 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.

NOTE: Tips for optimal use

• Consult the information in the technical data table.
• For further information and configuration please refer to the datasheet.

Product Description
The PISA-M devices are miniature four-channel protection modules for 24 V and 12 V systems.

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.

Installation Instruction

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.
Use an appropriately sized 24 V or 12 V power supply, which can deliver the peak current required to trip the load channels. If peak currents are too low, the PISA-M will trip channels in case of voltage drops to protect the power supply from overload.
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 1.5 kV 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: 40 mm on top, 30 mm on the bottom, 0 mm left and right side. Increase the 0 mm to 15 mm in case the adjacent device is a heat source. Between multiple PISA-M modules no clearance is needed. The device is designed for altitudes up to 5000 m.
The maximum surrounding air temperature is +70 °C. The operational temperature is the same as the ambient or surrounding air temperature and is defined 3 cm below the device.
The device is designed to operate in areas between 5 % and 95 % relative humidity.

Functional Description

The output can supply any kind of loads, including inductive and capacitive loads. The maximum size of capacitive loads is specified in the “Technical Data” table. Larger load capacitors might result in an unintended turn-off of the channel.
Do not apply return voltages from the load to the output terminals higher than 30 V.
Do not parallel outputs for higher output currents.
Do not connect outputs in a series connection for higher output voltages.
Do not connect batteries for charging purposes to the output of the device.
Output channels can be switched on and off separately by pushing the corresponding control button for 50 ms or 1 s, depending on selected button reaction style. A channel that is switched off is indicated by the red LED.
If the total current is larger than 20 A for 2 s or more, the device turns off the output channels, starting with overloaded channels, then continuing with CH4 to CH1 until the total output current is 20 A or less. The tripping current can be set individually for all channels. The tripping characteristic can be set as a common parameter for all channels.

Front Side and User Elements

A Input Terminals
Identical poles are internally connected.
1.1 (+) Positive input pole
1.2 (-) Negative input (return) pole
1.3 (-) Negative input (return) pole
B Output Terminals
2.1 (+) Channel 1 positive output pole
2.2 (+) Channel 2 positive output pole
2.3 (+) Channel 3 positive output pole
2.4 (+) Channel 4 positive output pole
C Control Signal Input
3.1 (+) Signal input positive pole
3.2 (-) Signal input negative (return) pole
Signal input can be used to send reset signal (1 s active) or for data communication using Digital Coded Interface.
D Status Signal Output
3.3 (+) Signal output positive pole
3.4 (-) Signal output negative (return) pole
Signal output can be set to several operation modes.
E Channel Control Buttons (CCB)
Press of button combinations to enter configuration modes.
F Channel Status LEDs
Show status of each output channel.
G QR Code for direct access to documentation

Terminals and Wiring

| Solid Wire
mm²| Stranded Wire
mm²| AWG| Max. Ø
mm| Wire Strip.
Length
mm
---|---|---|---|---|---
Input| Push-in terminals| ≤ 2.5| ≤ 2.5| 12| 2.5| 10
Output| Push-in terminals| ≤ 2.5| ≤ 2.5| 12| 2.5| 10
Signal| Push-in terminals| ≤ 1.5| ≤ 1.5| 16| 0.75| 10

Channel Status LEDs

(total output current > 20 A for > 2 s) or power supply protection mode activated
LED OFF| Device not powered

For other blinking codes, see user manual.

Mounting Instructions

Pay attention to ambient conditions and installation clearances.
Install the device onto a DIN rail according to EN 60715, see Fig. 1-1.
Turn off power source before installation.
Connect the cables to output terminal B.
Connect the cables to input terminal A.
Connect the cables to signal terminals C and D.

Demounting Instructions

Warning: Turn off power source before demounting.
Remove the cables at input terminal A.
Remove the cables at output terminal B.
Remove the cables at signal terminals C and D.
Insert a screwdriver into the lower tab and press the tab down to unlock, see Fig. 1-2.

User Configurable Settings

For detailed configuration hints, see PISA-M user manual.
Turn channels ON or OFF
Factory setting: All output channels ON
Press of single CCB to switch selected channel ON/OFF .
Required duration of button press can be configured.
Reset tripped channel
Press of single CCB > 1 s to reset a tripped channel manually.

Select Tripping Characteristic
Factory setting: Fast tripping characteristic
Press CCB1 and CCB3 simultaneously for 50 ms.
LEDs 1 to 4 indicate present setting with a running light:
• Fast running light: Fast tripping characteristic
• Slow running light: Slow tripping characteristic
Press CCB1 and CCB3 simultaneously for 50 ms within 4 s to toggle tripping characteristic.
LEDs 1 to 4 indicate the updated setting with the running light.
Press any button (except CCB1 and CCB3 simultaneously) to exit setting mode.
  Device will exit setting mode automatically after 4 s inactivity.

Communication Modes

Technical Data

Input voltage| DC 24 V
DC 12 V| – 20 % / + 25 %
– 20 % / + 25 %
---|---|---
Input current| 20 A| max.
Internal consumption| 30 mA at 24 V
20 mA at 12 V|
Output current tripping
setpoint| 8:00 AM| per channel
Sum current all channels| 20 A| max.
Tripping characteristics| slow or fast| selectable
Tripping delay| < 2 ms
0.22 s
< 10 ms
1.1 s| at short circuit for fast tripping at 1.5 x tripping
setpoint at short circuit for slow tripping at 1.5 x tripping setpoint
Capacitance load| 40 mF, at 8 A, 24 V
resistive load, slow
tripping| max., per channel
Efficiency| 99 % at 24 V
98 % at 12 V|
Power losses| 3.5 W at 24 V
3.0 W at 12 V| all channels with 5 A load
Standby losses| 0.7 W at 24 V
0.25 W at 12 V|
Temperature Range| -25 °C to + 70 °C|
Size (W x H x D)| 22.5 x 104 x 98 mm|
Weight| 100 g|

All parameters are specified at 24 Vdc, 4 x 5 A, +25 °C ambient and after a 5 minutes run-in time unless otherwise noted.

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