PILZ PNOZ m B0 Modular Safety Controller

PNOZ m B0 Base Unit, Order No. 772100

Product Family: PNOZmulti 2 modular safety controller (PNOZ m2), configurable multi-function safety relay / compact safety PLC

1. Model Code Definition

PNOZ: PILZ safety relay series identifier

m: Multi, modular configurable system

B0: Base Unit 0, entry-level host without onboard fieldbus

772100: Unique material order number

2. Core Technical Specifications
3. Power Supply: 24 V DC
4. Onboard Inputs: 8 safe digital inputs
5. Onboard Outputs:

4 safe semiconductor outputs (OSSD)

4. Communication: No integrated fieldbus interface (only B1/B2 models come with Profinet/EtherCAT onboard)
5. Programming: Configured via PNOZmulti Configurator, program downloaded over USB port
6. Safety Performance: PL e / SIL 3 (per EN ISO 13849 & IEC 61508)
7. Operating Temperature: -10℃ ~ +55℃
8. Mounting: DIN rail mounting
9. Enclosure Rating: IP20 (for cabinet installation only)
10. Program Storage: SD card; program can be copied to another identical unit directly via card swapping
11. Functions & Typical Applications

Monitoring emergency stop pushbuttons, safety gate switches, safety light curtains, safety mats, two-hand control stations

Safety logic: AND/OR operations, time delay, interlock, safety counter, mode selection (auto/manual)

Target Equipment: Machine tools, packaging machinery, automated production lines, conveyor systems, robot peripheral safety protection

Key Feature: Modular architecture; I/O expansion modules can be added later.

Note: PNOZ m B0 has no built-in bus interface and only supports local I/O. For fieldbus communication, select PNOZ m B1 (772100, Profinet) or PNOZ m B2 (772102, EtherCAT).

4. Matching Components

Expansion Modules (PNOZmulti 2 series, mounted on the right side of 772100)

Digital input expansion: 772110

Relay output expansion: 772120

Semiconductor output expansion: 772121

Software

PNOZmulti Configurator (free download from PILZ official website; supports PNOZmulti Classic and PNOZmulti 2)

Program Migration

Programs can be copied directly via SD card; identical 772100 units run the program immediately after card insertion. Migration to B1/B2 bus versions requires hardware reconfiguration inside the software.

5. On-Site Troubleshooting Guide
6. No POWER LED: Check 24 V DC polarity, fuses, terminal wiring and power supply ripple
7. Constant ERR LED: Program configuration error, corrupted SD card or hardware fault; read diagnostic data via software
8. No response from safety inputs: Check dual-channel wiring continuity, short circuits, contact polarity and input filter parameters
9. OSSD semiconductor outputs fail to energize: Safety logic conditions not met, output overload or short circuit; verify load status
10. Cross-Model Alternatives & Competitor Products

In-Series Upgrade

PNOZ m B1 (772101): Profinet interface

PNOZ m B2 (772102): EtherCAT FSoE interface

Cross-Brand Equivalents

Schneider Electric XPSM series

Siemens F30 safety relay modules

IFM safety controllers

Domestic Replacements

Configurable safety controllers certified up to PL e / SIL 3.

Limitation: Different software, certification and terminal definitions; projects cannot be migrated directly and require full reconfiguration.

PNOZmulti 2 (PNOZ m2) Full Model List (Order No. 7721xx)

Base Units (Left: bus modules; Right: I/O expansion modules)

Right-Side Safe I/O Expansion Modules (PNOZ m EF, PL e / SIL3)

Digital I/O Modules

Safe Analog Input Module

|PNOZ m EF 4AI|772160|4-channel safe analog input (0–10 V / 4–20 mA)|

Motion Monitoring Modules (Safe axis control)

Right-Side Standard Non-Safe I/O Modules (PNOZ m ES, only supported by B1/B2)

Left-Side Communication & Link Modules

Fieldbus Modules

Safety Interlink Modules (Multi-controller networking)

|PNOZ m EF Multi Link|772120|Interlink multiple PNOZ m2 controllers (copper / fibre optic)|

|PNOZ m EF PDP Link|772121|Connect distributed PDP67 remote I/O|

|PNOZ m EF SafetyNET|772122|SafetyNET p safety Ethernet networking (max. 16 units)|

|PNOZ m EF FSoE|772123|EtherCAT FSoE safety communication extension|

Preconfigured Complete Packages

PNOZ m2p: 772100 + 772144 (standard press machine configuration)

PNOZ m2p ETH: 772100 + 772130 + 772144 (press version with Ethernet)

Spare Parts & Accessories

1. Program SD card (not included with base unit; ordered separately)
2. Plug-in terminals: Spring-clamp terminal 783542; screw terminal 793542
3. Inter-module jumpers: 779260

Expansion Rules (Critical)

1. PNOZ m B0 (772100): Max. 6 EF safety modules on the right; ES standard I/O modules are NOT supported; only 1 bus/link module on the left.
2. PNOZ m B1/B2: Max. 12 EF safety modules + up to 6 ES standard I/O modules on the right.
3. PNOZ m B0.1 (772104): Only 1 I/O module allowed; no multi-module cascading.

Application Scenarios for PNOZ m B0 (772100)

1. General Safety Monitoring (Most Common Use Case)

It monitors and executes safety logic for these protection devices:

1. Dual-channel E-Stop pushbuttons
2. Safety gate switches (PSEN series)
3. Safety light curtains & laser scanners
4. Safety mats and safety edges
5. Two-hand control buttons (press machine dedicated logic)
6. 3-position enabling switches (teach pendant)
7. Mode selector switches (auto/manual/jog interlock)
8. Reset buttons and muting functions

Supported logic: AND/OR, time delay, interlock, edge detection.

The OSSD outputs cut off main contactors or servo enable signals, fully complying with EN ISO 13849 machinery safety standards.

2. Industry-Specific Deployments

(1) Machine Tools & Press Equipment

Equipment: Mechanical presses, hydraulic presses, press brakes, shears

Monitored signals: Two-hand stations, safety gates, light curtains, slider position (with 772170 motion module)

Safety functions: Single-stroke operation, anti-repeat stroke, interlock, delayed safe stop; pre-certified press function blocks available

Requirement: PL e Category 4; ideal for retrofits replacing multiple discrete safety relays.

(2) Packaging Machinery

Machines: Vertical form-fill-seal machines, horizontal packing machines, case erectors, palletizers

Monitored points: Guard doors, feed opening light curtains, E-stop, material muting

Benefit: Consolidate multiple safety door controls into one controller, reduce cabinet wiring and simplify fault diagnosis.

(3) Assembly Workstations & Robot Cells

Applications: Standalone robot cells, conveyor stations, fixture & test stations

Protection: Fence safety gates, laser area scanners, teach pendant enable switches, multi-zone safety interlocking

Optional upgrade: Install 772138 Profinet module on the left to transmit safety status and fault codes to the main PLC and HMI for remote diagnostics.

(4) Material Handling & Logistics Automation

Equipment: Belt conveyors, roller lines, transfer lifts, sorting systems

Use case: Multiple E-stops along the line, access door interlocks, sectional safe stop; distinguish local shutdown from global emergency stop.

(5) Rubber & Plastics / Injection Molding Machines

Injection moulders and extruders: Guard door interlocks, hopper protection, mould area light curtains, mould safety interlock and safety time delay.

(6) Thermal Processing / Furnace Systems (EN 298 Compliant)

Small heating furnaces: Monitor air pressure, flame signals, safety valve interlocks and burner safety chains.

Note: Multi-burner large furnace systems should select the B1 Burner variant.

3. Two Standard Engineering Configurations

Mode 1: Standalone Base Unit (No Expansion Modules)

8 safe DI + 4 OSSD onboard I/O.

Best for small standalone machines: 1~2 safety gates + 1 light curtain + E-stop with simple logic, saving cabinet space.

Mode 2: With Right-Side EF Expansion Modules (Max. 6 Modules)

Expandable for:

Extra digital inputs / relay outputs

Safe analog modules (temperature & pressure safety monitoring)

Safe motion control modules (speed, position and safe speed limitation)

Suitable for medium-sized machines with multiple guard points and axis safety monitoring.

4. Retrofit & Machine Modernisation Projects

Perfect for legacy equipment upgrades:

Replace dozens of discrete safety relays with one controller, simplify wiring and reduce troubleshooting time.

Logic is software-configured; the built-in LCD directly pinpoints fault locations, cutting spare part varieties.

Program backup via SD card; replacement units run immediately after card insertion.

5. Selection Boundaries (When NOT to choose 772100)
6. Large production lines with high I/O count and demand for standard non-safety I/O → Choose PNOZ m B1 (772101)
7. Native EtherCAT FSoE bus required → Choose PNOZ m B2 (772102)
8. Minimal safety points with zero expansion needed → Compact PNOZ m C0 (772105)
9. Multi-burner furnace systems → PNOZ m B1 Burner
10. Bus Communication Solution: 772100 + 772138

Install the PNOZ m ES Profinet (772138) module on the left slot of PNOZ m B0:

Hardwired local safety cut-off remains fully independent. Safety status, fault codes and I/O states are uploaded to the main PLC via Profinet.

The PLC only performs monitoring; safety shutdown never relies on fieldbus communication, fully complying with functional safety regulations.