PILZ PNOZ m B0 configurable safety control system basic unit

PILZ PNOZ m B0 configurable safety control system basic unit

PILZ PNOZ m B0 is a configurable safety control system basic unit, which serves as the core basic unit of PNOZmulti 2 series. It supports IEC 61131-3 programming and multiple buses such as EtherCAT and Modbus. It has 4 safety outputs, 12 dedicated inputs, 8 mixed I/O, and 4 test pulse outputs, and can achieve PL e/Cat.4/SIL CL 3 safety level. The program can be downloaded through a chip card or USB, and comes with an LCD screen, rotating knob, and LED for local diagnosis. It is suitable for industrial safety circuits such as emergency stop, safety door, and dual hand control.

Core hardware configuration

Type Quantity/Specification Description

12 dedicated inputs for emergency stop, safety door, grating, reset, PSEN, etc

8 configurable I/O channels (IM0~IM3, IM16~IM19) can be set as inputs or auxiliary outputs

Safe output 4-channel (O0~O3) semiconductor output, 2A/channel, safety level

Test pulse output, 4-channel monitoring input short circuit, cannot be loaded

4-channel configurable auxiliary output, non safety function

Storage chip card (8KB/32KB) storage configuration project

Interface USB, extension interface download program, connection extension module

Security Performance (Core)

Architecture: Dual MCU redundancy, built-in self-monitoring, maintains safety function in case of failure

Highest level:

PL e / Category 4（EN ISO 13849-1）

SIL CL 3（EN IEC 62061）

Service life: TM=20 years

System response time: 30ms

Operation and Display

LED indicator light

PWR: Power Supply

RUN: Run

DIAG: Diagnosis

Fault: Total malfunction

I FAULT: Input fault

O FAULT: Output fault

LCD display screen

Display I/O status, error messages, project information, and device information

Error Stack: Stores up to 64 errors

Rotate the knob

Can be pulled out/rotated/pressed for menu navigation, confirmation, and reset

Long press for 3-8 seconds to execute project download/device reset

Installation specifications

Installation method: DIN rail vertical installation, heat sink facing up and down

Installation spacing: Above/Below * * ≥ 30mm * *, Both sides * * ≥ 20mm**

Protection requirements: Installed in control cabinets with an IP54 rating or higher

Expansion connection: To connect the expansion module through jumper wires, a terminal must be installed

Anti static: Static electricity must be released before operation

Wiring and power supply

System power supply: 24VDC (A1/A2), fluctuation -20%~+25%

Output power supply: 24VDC, can be isolated independently from the system power supply

Wiring terminal: optional spring or screw type

Wire: 75 ℃ heat-resistant copper wire, inductive load requires protection

Test pulse line: cannot be laid in the same cable as the power line

Debugging and Program Download

Two download methods

Chip card: Insert → Power on → Long press knob for 3-8 seconds to load

USB: Connect to computer → Download through PNOZmulti Configurator

Mandatory requirement: Functional testing must be conducted after each download/card replacement/reset of the project

Chip card usage: power off insertion and removal, keep the contacts clean and without bending

Technical parameters

Working temperature: 0~+60 ℃

Storage temperature: -25~+70 ℃

Input current: 5mA/channel (24VDC)

Safe output voltage drop: ≤ 500mV

Size: 101.4 × 45 × 120 mm

Weight: 235g

Maximum wiring distance: Input 1km, test pulse 2km

Ordering Information

Basic Unit: PNOZ m B0, Order Number 772100

Attachment: Terminal, USB cable, spring/screw terminal

Key questions and answers

Question: How to allocate the input and output of PNOZ m B0? What are the electrical restrictions for safe output? 

Answer: Configure 12 dedicated safety inputs, 8 configurable I/O, 4 safety semiconductor outputs, and 4 test pulse outputs; The safety output is 24VDC, with a maximum of 2A per circuit and short-circuit protection. Inductive loads require protection and cannot be used for ordinary loads outside of safety functions.

Question: How does the controller achieve the highest level of safety? What are the specific certification indicators achieved? 

Answer: Adopting dual MCU redundant architecture+hardware self-monitoring+output short circuit monitoring; It can achieve PL e, Category 4 (EN ISO 13849-1), and SIL CL 3 (EN IEC 62061), which is the highest level of industrial safety circuits.

Question: What are the local diagnostic methods for PNOZ m B0? How to reset after a malfunction occurs? 

Answer: Diagnosis includes 6 LED status lights, LCD text prompts, and an error stack (up to 64 entries); After troubleshooting, press and hold the knob for 3-8 seconds to perform a reset, or select the reset item or restart the device from the menu.