Pilz PNOZmulti series safety control system

Product Overview

PNOZmulti includes three series of configurable security controllers, all of which adopt a basic unit+expansion module architecture and are configured by PNOZmulti Configurator software:

PNOZmulti Classic: Standard Safety Small Controller

PNOZmulti Mini: Compact Safety Controller

PNOZmulti 2: New generation high-performance secure small controller

System Expansion Rules (Core)

1. General constraints

Only one basic unit is allowed to be used

Expansion modules can be installed on the left/right side of the base unit

The maximum expansion quantity is determined by the basic unit model

2. Maximum scalability of each series

（1）PNOZmulti Classic

Maximum number of modules for expansion position

8 expansion modules on the right side of the basic unit

4 extensions and 1 fieldbus module on the left side of the basic unit

Distributed modules (ml2p) with 4 modules per link, up to a maximum of 16 modules

（2）PNOZmulti Mini

Maximum number of modules for expansion position

One sigma expansion module on the right side of the basic unit

On the left side of the basic unit, there is 1 fieldbus, 1 communication module, and 4 link modules

Distributed modules (mml2p) with 4 modules per link, up to a maximum of 16 modules

（3）PNOZmulti 2

Basic model, maximum on the right and maximum on the left

PNOZ m B0 6 x 4 expansion+1 communication+1 bus

PNOZ m B1 12 x 4 expansion+1 bus

PNOZ m B0.1 1 with 4 extensions+1 communication+1 bus

PNOZ m C0 0 pieces 0 pieces

Supported types of extension modules

1. General modules

Input modules: secure digital input, analog input

Output modules: relay output, semiconductor output, bipolar output

Link module: Multi machine interconnection, distributed I/O link

Fieldbus modules: Profinet, EtherCAT, CANopen, Profibus, etc

Motion monitoring module: single/dual axis speed and position monitoring

Distributed module: PDP67 (IP67, 8 secure inputs)

2. Series exclusive modules

Classic: ms1p-ms4p speed monitoring module

Mini: PNOZigma Relay Expansion

2nd generation: EF series integrated input/output, SafetyNET p communication

System response time (core formula)

1. General calculation formula

Classic/Mini：

TReactionMax=maximum input delay+maximum output disconnect delay

PNOZmulti 2：

TReactionMax=maximum input delay+maximum processing time+maximum output disconnect delay

2. Typical delay parameters

Series Typical Input Delay Typical Processing Time Typical Output Delay

Classic 4ms – 30~50ms

Mini 4ms -30ms+module delay

2nd generation 2-8ms 3-30ms 1-22ms

3. Typical calculation examples

Classic: m1p input+mo4p output → 54ms

Mini: mm0.1p input+s7 output → 64ms

2nd generation: B0 input+4DI4DOR output → 54ms

2nd generation: 1MM2DO module → fastest 20ms

Multi system Interconnection Specification

1. Interconnection method

Multi Link: Interconnected through linking modules, with a maximum of 4 linking modules per basic unit

SafetyNET p RTFL: PNOZmulti 2 dedicated, linear topology up to 16 units

2. Interconnection latency

Multi Link: Add 35ms transmission delay per link

SafetyNET p: Increase transmission delay by 25ms per link

Multi machine cascading: Delay superposition (such as 3-machine interconnection → 104ms)

Key issues

Question 1: What are the core differences in reaction time calculation between PNOZmulti 2 and Classic/Mini?

Answer: Classic and Mini only require input delay and output delay; PNOZmulti 2 must add a processing time term, and the 2nd generation basic unit has a minimum input delay of 2ms and a maximum output of 1ms, making it faster and more accurate overall.

Question 2: How many distributed I/O modules can the PNOZmulti system expand up to and how can it be implemented?

Answer: Through the extension of link modules (ml2p/mml2p/EF PDP), each link module supports 4 PDP67 modules, and the entire system can support up to 16 distributed IP67 modules.

Question 3: How to calculate the response time when multiple PNOZmulti systems are interconnected? Please provide examples to illustrate.

Answer: For each additional Multi Link link, add a 35ms transmission delay. Example: Three Classic cascades → total delay=input 4ms+link 35ms+link 35ms+output 30ms=104ms.