Instructions for use of Pilz safety relay PNOZ s5

In view of the questions raised by the back-end friends, in this article today I want to introduce the use of Pilz safety relay PNOZ s5.

This article mainly includes the following topics:

The appearance and terminal introduction of PNOZ s5;

The working principle of PNOZ s5;

PNOZ s5 working mode and reset method;

PNOZ s5 timing setting;

1. The appearance and terminal introduction of PNOZ s5 PNOZ s5 belongs to the PNOZSigma family.

The appearance of the safety relay with delay function is shown in the figure below:

There are 8 wiring terminals on the upper and lower sides of the module, of which:

A1 and A2 are the wiring terminals of the module power supply; S11 and S12 are a set of safe input channels terminal;

S21 and S22 are the wiring terminals of another set of safety input channels;

13/14 is a group of normally open safety contacts, 23/24 is another group of normally open safety contacts

Point, these two sets of normally open contacts are of instantaneous type (instantaneous);

37/38 is a group of normally open safety contacts, 47/48 is another group of normally open safety contacts, these two groups of normally open contacts are of the delayed disconnect type (delay);

S34 is the wiring terminal of the reset signal;

Y32 is the output signal terminal of the safety relay;

There are 6 LED indicators in the middle left part of the module, of which:

Power: Module power LED light, green when the power is turned on;

In1: The LED light of input channel 1, which is green when the channel is closed;

In2: The LED light of input channel 2, which is green when the channel is closed;

Out: The output LED light of the relay, when the normally open contact is closed, it is green and steady;

Reset: LED indicator for reset signal;

Fault: Fault signal LED indicator, red when lit;

There are three knobs in the middle part, the top one is used

Set the working mode of the safety relay, the following two are used to set the timing time;

2. The working principle of PNOZ s5

First look at the internal schematic diagram of PNOZ s5:

A1 and A2 are the power terminals of the relay. PNOZ s5 has two voltage ranges:

24V DC, order numbers: 750105, 7511005 and 751185;

48~240V AC/DC, order number: 750135,751135;

S11/S12 and S21/S22 are safety input channels. When both safety input channels are closed and the module A1/A2 is normally powered, the four normally open contacts on the right side will be closed, and the Y32 internal transistor is turned on. , Can provide external 24VDC power, can be connected to the input channel of the PLC; when any one of the safety input channels is disconnected (such as pressing the emergency stop button or opening the safety door), the immediate action normally open contact (13/14 and 23 /24) will be disconnected immediately, and the delayed disconnection type normally open contacts (37/38 and 47/48) will be disconnected after a set time delay; when any one of the safety input channels is disconnected (such as pressing Emergency stop button or open the safety door), the immediate-action normally open contacts (13/14 and 23/24) will immediately open, and the delayed disconnection normally open contacts (377/38 and 47/48) will delay It will be disconnected after the set time. When the safety input channel is closed again, if the module is set to [Auto reset] mode, the four output channels (13/14, 23/24, 37/38, 47/48) will immediately Closed; if the module is set to [manual reset] mode, you need to give a voltage signal to the S34 terminal to reset;

How to set up automatic reset or manual reset?

3. PNOZ s5 working mode and reset type

The uppermost knob in the middle of PNOZ s5 can be used to set the working mode and reset mode of the module, as shown in the figure below:

There are two working modes:

"In2+" on the left means no short circuit detection between contacts;

The "In2-" on the right means with short circuit detection between contacts;

In each working mode, there are four resetting methods, as shown in the figure below:

4. Timing setting of PNOZ s5 PNOZ s5 can set the time to control the contact 37/38 and 47/48 to open delay.

Timing time = time value x multiple;

The time value is the time value pointed by the knob t[s], the unit is: second;

The multiple is the value pointed to by the knob n;

for example:

Assuming that t[s] chooses 30 and n chooses 10, then the timing time=30x10=300s, as shown in the following figure:

Well, I will introduce so many instructions for the use of PNOZ s5. If you are interested, I will introduce specific usage routines (such as how to connect the emergency stop button, etc.).