Pilz PNOZ s30 Data Sheet

Speed Monitor

Up to PL e of EN ISO 13849-1

PNOZ s30

Gertebild

][Bildunterschrift_Drehzahlwchter

Speed monitor for safe monitoring of standstill, speed, position, speed range and direction of rotation.

Approvals

PNOZ s30

SÜDDEUTSCHLAND

Pending

Unit features

Gertemerkmale PNOZ s30

` Measured value recorded by

– Incremental encoder – Proximity switch

` Measured variables

– Standstill – Rotational speed –Position – Speed range – Direction of rotation

` Positive-guided relay outputs

– 2 safety contacts – 2 auxiliary contacts

` Semiconductor outputs

– 4 auxiliary outputs

` Expansion interface for 2 more safe

relay outputs

` Can be configured via the display

on the speed monitor

` Configuration is stored on a chip

card

` Display

– Current frequency – Current position – Warning and error messages

` Status and fault LEDs

` Incremental encoder connection

technology: RJ-45 female connector

][Gertemerkmale_Zusatz_Datenblatt

` See order reference for unit types

Unit description

Gertebeschreibung_Drehzahlwaechter_plus_Position_Bereich

The speed monitor monitors standstill, speed, speed range, position and direction of rotation in accordance with EN ISO 13849-1 up to PL e and EN IEC 62061 up to SIL CL 3.

Safety features

Sicherheitseigenschaften_multi_allgemein

The relay conforms to the following safety criteria:

` The circuit is redundant with built-in

self-monitoring.

` The safety function remains effec-

tive in the case of a component failure.

Zulassungen

Block diagram

A1 A2

Power

S34

Reset/

Start

Feed-

back

Y1 Y2

Blockschaltbild PNOZ s30

S11 S21

0 V

24 V

RJ45

Y32 Y33 Y34 Y35

In1 In2

Inputs (SEL)

Y10 Y11 Y12 Y13 Y30 Y31

GND

Initiator

Input

Select

24 V ext

0 V ext

Relay

Control

Rel. 1

Rel. 2

Interface

Extended Relais

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PNOZ s30

Function description

Funktionen_Einführung

Encoders record the measured values. The monitoring functions are selected via the select inputs and applied to the measured values. The monitoring functions are configured menu-driven using a rotary switch. The outputs switch depending on the configuration. In order to extend the number of outputs an interface is available to which a PNOZsigma expander module can be connected.

Monitoring functions

Funktionen_Überwachungsfunktionen

The speed monitor monitors for:

` Standstill

With standstill monitoring, the output is switched on when the value falls below the stated standstill value; if the standstill value is exceeded, the output switches off.

` Rotational speed

With overspeed monitoring, the output switches off when the stated value is exceeded.

` Position

Position monitoring is activated through a monitored reset via the reset input. The current position is adopted and the output is switched on. The output will now stay switched on provided the position is within the configured range (position window) around position x.

` Speed range

With range monitoring, the output switches off if the frequency is outside the configured range.

` Direction of rotation

If the direction of rotation is to be safely detected, this function must be linked to a safety contact. – If "Clockwise" is configured, the

safety output is switched on during normal operation in clockwise rotation.

– If "Anti-clockwise" is configured,

the safety output is switched on during normal operation in anti-

clockwise rotation. A tolerance can be entered for both directions of rotation. Within this tolerance, the drive can run in the wrong direction without the as-

signed output switching off. Please note: No direction of rotation can be detected if proximity switch-

es are used. Incremental encoders or proximity switches can be used to record the values (see "Encoder types" chapter).

Reset modes

You can choose between the following reset modes:

` Automatic reset

If an automatic reset is configured,

the output switches on automati-

cally if the speed does not reach the

limit value, for example.

` Monitored reset with rising edge

If a monitored reset with rising edge

is configured, the output switches

on if the speed does not reach the

limit value and a rising edge was

detected at S34.

` Monitored reset with falling edge

If a monitored reset with falling

edge is configured, the output

switches on if the speed does not

reach the limit value and then a fall-

ing edge was detected at S34.

Switch delay

A delay time of 0 ... 30 s can be set for each output. The outputs will not switch until the set time has elapsed. It is possible to configure whether the delay time is to be activated when switching on, switching off, or switching on and off.

Feedback loop

The feedback loop is used to monitor external contactors or relays. If an output is activated, it will not switch on until the feedback loop is closed.

Hysteresis

A hysteresis of 0 ... 50 % can be entered for each function. This prevents the outputs on the speed monitor from bouncing if there are fluctuations around the response value. The hysteresis becomes effective when the output is switched on: Switch-on value = switching threshold – hysteresis For the lower range limit: Switch-on value = switching threshold – hysteresis

Start-up suppression time

To avoid spurious output signals, during the machine's start-up phase the evaluation of the encoder signals can be delayed after the start (0 ... 30 s).

Switching direction on semiconductor outputs

The semiconductor outputs can be operated in normally de-energised or normally energised mode.

Units

The configured values can be entered in various units. Various units can be selected for speed and distance, depending on the axis type (linear or rotational axis).

Broken shearpin monitoring

To monitor for broken shearpins, an incremental encoder is connected to track A and B and a proximity switch to track Z.

Speed configuration

Funktionen_Drehzahlkonfiguration

The speed monitor is configured using the rotary knob at the device. Up to 9 switch functions F1 ... F9 that are monitored simultaneously can be configured in a parameter set. A switch function is comprised of:

` Configured speed/standstill ` Switching threshold ` Hysteresis

The standstill value is applied for configured switch functions for which no value is entered. The outputs are assigned to the switch functions. A switch delay and the reset behaviour can be configured for each output. For monitoring various operating modes, for example, up to 16 parameter sets (P0 ... P15) can be configured with max. 9 switch functions each. The parameter set for which the switch functions are to be monitored is then selected via the 4 select inputs SEL1, SEL2, SEL4, SEL8. If only one parameter set is used, you should configure the parameter set P0. Then it is not necessary to connect a select input.

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Example: 2 parameter sets for 2 operating modes are configured:

` Set-up: P1 ` Automatic mode: P2

The parameter set P2, "Automatic mode", is selected for speed monitor-

ing (selection via the select inputs, see next chapter "Select inputs"). The following switch functions are selected for the parameter set P2:

` F1: Standstill 2 Hz ` F2: Overspeed: 3000 Hz ` F3: Warning threshold: 2800 Hz

The following outputs are assigned to the switch functions:

` F1: Relay output Rel. 1 ` F2: Relay output Rel. 2 ` F3: Semiconductor output Out 1

For a better overview of the device settings, we recommend that you fill in the configuration overview before setting the device parameters (link to form, see "Create configuration overview" chapter).

1001758-EN-01-2010-11

Speed Monitor

Up to PL e of EN ISO 13849-1

PNOZ s30

Select inputs

Funktionen_Select-Eingaenge

The parameter sets are selected via the 4 select inputs SEL1, SEL2, SEL4, SEL8. Only one of the configured parameter sets can be selected.

Parameter set Signal statuses of the select inputs

SEL 8 SEL 4 SEL 2 SEL 1 P1 0 0 0 1 P2 0 0 1 0 P4 0 1 0 0 P8 1 0 0 0

For applications up to PL e of EN ISO 1349-1 and up to SIL CL 3 of EN IEC 62061 max. 4 parameter sets

can be configured: P1, P2, P4 and P8 (or P0 if only 1 parameter set is used).

The default value "Standstill" must not be changed for all other parameter sets. When using these 4 select inputs, the following safety features are met:

` The 1 from n principle ensures that

none of the parameter sets P1, P2,

Parameter set Signal statuses of the select inputs

SEL 8 SEL 4 SEL 2 SEL 1 P0 0 0 0 0 P1 0 0 0 1 P2 0 0 1 0 P3 0 0 1 1 P4 0 1 0 0 P5 0 1 0 1 P6 0 1 1 0 P7 0 1 1 1 P8 1 0 0 0 P9 1 0 0 1 P10 1 0 1 0 P11 1 0 1 1 P12 1 1 0 0 P13 1 1 0 1 P14 1 1 1 0 P15 1 1 1 1

P4 or P8 are selected due to errors in the actuation. In the event of an error, monitoring for standstill always occurs.

` Short circuits will be detected ` P0 is selected in the event of an

open circuit.

If necessary, the number of parameter sets can be increased to max. 16. These can only be used for applications up to max. PL d of EN ISO 13849-1 and up to SIL CL 2 of EN IEC 62061.

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When using the expanded parameter sets, please note:

If an open circuit occurs when activating the select inputs, the next lowest value is activated. The limit values for the switch functions must therefore always be entered in ascending order. (Parameter set 1 -> lowest values, parameter set 15 -> highest values).

Switch-on delay of the select inputs

A reaction time of between 0 and 30 s can be entered for the select inputs. That way it is possible to avoid invalid signals (e.g. contact bounce) that occur when switching.

Safety guidelines for configuration

_Dummy-Vorlage

During the configuration for safety-related applications, please note:

` The maximum frequency of the en-

coders used must be entered for a complete configuration ("Input Device type"-> "Track AB" -> "Track AB fmax" or "Track Z" -> "Track Z fmax" menu.)

` The standstill frequency must be

the smallest frequency entered in the configuration.

` For parameter sets that aren't used,

the standstill values are automati-

cally transferred. These must not be changed.

` The limit values must always be en-

tered in ascending order. (Parameter set 1 -> lowest values, parameter set 15 -> highest values).

` During position monitoring, please

note: – Monitored reset must be config-

ured for the position monitoring.

– A position monitoring function

must not be assigned to two outputs that are activated with different reset behaviour (one output rising edge, one output falling edge).

` The configurable output switch-off

delay (t

, Off) when overspeed is

reached will increase the speed monitor's reaction time by the stated value (see technical details). This must not delay the arrival of a safe condition by more than the permitted time. The configuration of the switch-off delay must be considered in the risk assessment as regards hazards, reaction time and safety distance.

Chip card

Funktionen_Chipkarte

The set parameters, the name of the configuration and the passwords are stored on the chip card (see "Using the chip card" chapter).

Integrated protection mechanisms

Sicherheitseigenschaften_multi_allgemein

The relay conforms to the following safety criteria:

` The circuit is redundant with built-in

self-monitoring.

` The safety function remains effec-

tive in the case of a component failure.

Proximity switch

S_DZW_Anford_Naeherungsschalter

` The following proximity switches

can be used: –pnp –npn

` The proximity switches must be fit-

ted so that at least one is always activated.

` The proximity switches must be fit-

ted so that the recorded signals overlap.

` The supply voltage of the proximity

switches should be monitored via the track S.

Proximity switch 1

Proximity switch 2

CAUTION!

Appropriate installation measures should be taken to prevent a foreign body coming between the signal encoder and the proximity switch. If not, the foreign body could cause invalid signals.

` Please note the values stated in the

technical details

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Speed Monitor

Up to PL e of EN ISO 13849-1

PNOZ s30

Incremental encoders

S_DZW_Anford_Geber

` The following encoders can be

used: – TTL, HTL (single-ended or differ-

ential signals) – sin/cos 1 Vss – Hiperface

` The encoders can be connected

with or without Z index

` A proximity switch can also be con-

nected to track Z for monitoring broken shearpins

Input device Operating

Standard encoder Monitoring Safe encoder Standard encoder + proximity

switch feasibility (Z frequency)

2 proximity switches Safe encoders with Z index

*1)

*2)

mode PNOZ s30

1 encoder

Monitoring 2 encoders

*1)

` An output can be connected at the

encoder via track S (e.g. for fault

monitoring). Please note the values stated in the technical details

Adapter for incremental encoders

Drehzahlwaechter_Inkrementalgeber_Adapter

The adapter records the data between the incremental encoder and the drive and makes it available to the speed monitor via the RJ-45 female connector. Pilz supplies complete adapters as well as ready-made cable with RJ-45

Max. achievable values

EN ISO 13849-1 PLEN IEC

62061 SIL CL

PL c (Cat. 1) PL d (Cat. 2) SIL CL 2

PL e (Cat. 3) SIL CL 3

female connectors, which can be used when making an individual adapter. The range of products in this area is constantly being expanded. Please contact us about the range of adapters that is currently available.