2986711___psr-scp-_24dc-etp-1x1 (1)

1 Description

SIL coupling relay

PSR-SCP- 24DC/ETP/1X1

© PHOENIX CONTACT

Data sheet

The PSR-ETP SIL coupling relay can be used for power ad-

aptation and electrical isolation in low demand applications

up to SIL 3 according to IEC 61508 as well as EN 61511.

By filtering the control controller test pulses, premature failure

of the forcibly guided safety relay is prevented.

Features

– SIL 3 coupling relays for safety-related switch on/F&G

application

– Developed for low demand applications

– Integrated DCS test pulse filter

– Low inrush current

– An undelayed enabling contact

– Optional plug-in screw or spring-cage terminal blocks

– Connectable, configurable open circuit and load monitor-

ing

– Special design for avoiding spurious trips

WARNING: Risk of electric shock

Observe the safety instructions in the corresponding section.

Make sure you always use the latest documentation.

It can be downloaded from the product at www.phoenixcontact.net/catalog.

105212_en_00 2012-08-24


105212_en_00 PHOENIX CONTACT 2

2 Table of contents

1 Description .............................................................................................................................. 1

2 Table of contents ..................................................................................................................... 2

3 Ordering data .......................................................................................................................... 3

4 Technical data ......................................................................................................................... 3

5 Basic circuit diagram ............................................................................................................... 5

6 Derating................................................................................................................................... 5

7 Safety notes............................................................................................................................. 7

8 Pin assignment ........................................................................................................................ 8

9 Startup..................................................................................................................................... 9

10 Application examples ............................................................................................................ 10

10.1 Two-channel load connection with diagnostics enabled............................................................... 10



Description Type Order No. Pcs. / Pkt.

Coupling relay for SIL 3 low demand applications, couples digital output

signals to the periphery, 1 enabling current path, module for F&G applica-

tions, test pulse filter, plug-in screw connection, 17.5 mm width

PSR-SCP- 24DC/ETP/1X1 2986711 1

Coupling relay for SIL 3 low demand applications, couples digital output

signals to the periphery, 1 enabling current path, module for F&G applica-

tions, test pulse filter, plug-in spring-cage connection, 17.5 mm width

PSR-SPP- 24DC/ETP/1X1 2986562 1

3 Ordering data

Documentation Type Order No. Pcs. / Pkt.

User manual, German, for applications for PSR safety relay UM DE SAFETY RELAY APPLICA-

TION

2888709 1

4 Technical data

Input data

Nominal input voltage UN 24 V DC

Input voltage range 20.4 V DC ... 26.4 V DC

Input voltage range (factor) 0.85 ... 1.1

Typical input current 75 mA

Typical inrush current 200 mA

Typical response time 30 ms

Recovery time 1 s

Status display Green LED (POWER)

Output data

Contact type 1 enabling current path

Contact material AgNi, gold-flashed

Minimum switching voltage 15 V AC/DC

Maximum switching voltage 250 V AC (125 V DC)

Limiting continuous current 5 A (N/O contact, pay attention to the derating)

Maximum inrush current 5 A

Inrush current, minimum 100 mA

Switching capacity min. 1.5 W

Mechanical service life Approx. 107 cycles

General data

Relay type Electromagnetic dust-proof relay

Nominal operating mode 100% operating factor

Degree of protection IP20

Min. degree of protection of inst. location IP54

Mounting position Any

Air and creepage distances between the power circuits DIN EN 50178

Rated surge voltage / insulation 6 kV/safe isolation (through protective impedance)

Dimensions Screw connection Spring-cage conn.

W x H x D 17.5 x 99 x 17.5 x 112 x



Connection data Screw connection Spring-cage conn.

Conductor cross section, solid 0.2 mm² ... 2.5 mm² 0.2 mm² ... 1.5 mm²

Conductor cross section, stranded 0.2 mm² ... 2.5 mm² 0.2 mm² ... 1.5 mm²

Conductor cross section AWG/kcmil 24 ... 12 24 ... 16

Stripping length 7 mm 8 mm

Ambient conditions

Ambient temperature (operation) -20 °C ... 55 °C

Ambient temperature (storage/transport) -40 °C ... 65 °C

Shock 15 g

Vibration (operation) 2 g

Certification / Approvals

Approvals

Safety data

Stop category 0

Safety parameters for IEC 61508 - High demand

Duration of use 120 Months

Alternative illustration of the device as 1001 structure for process customers

Equipment type Type A

Safety parameters for IEC 61508 - Low demand

SIL 3

Diagnostic coverage (DC) 0 %

PFDavg 1,43 x 10-4

Proof test interval 132 Months

Alternative illustration of the device as 1001 structure for process customers

Equipment type Type A

HFT 0

SIL 3

Safe Failure Fraction (SFF) 99.64 %

SD 0 FIT

SU 815.86 FIT

DD 1.4 FIT

DU 2.94 FIT

Total 820.19 FIT

MTBF 126.54 Years

PFDavg 1.29 x 10-5

(For T1 = 1 year)



5 Basic circuit diagram

Figure 1 Block diagram

6 Derating

Figure 2 Vertical installation derating curve

Figure 3 Horizontal installation derating curve

Designation Explanation

A1/A2 Safety relay input voltage

24 V Supply voltage for connectable load mon-

itoring

L/L' (Input) on-load voltage

N/N' 0 V

LO/LO' Load input

NI/NI' Load output

A1 24V L

NI

LO

N

LO´

N´

L´

NI´

A2

Logic

Power

Error

-30 -20 -10 0 10 20 30 40 50 60 70

1

2

3

4

5

0100 mA500 mA

T [°C]

I[A

]

-30 -20 -10 0 10 20 30 40 50 60 70

1

2

3

4

5

0100 mA

T [°C]

I [A

]



Relay load curve

Figure 4 Relay load curve

No Explanation

1 DC inductive Load cos = 0,4

2 AC resistive Load

3 DC resistive Load

4 DC induktive Load L/R = 7 ms

Kontaktspannung [V]

Ko

nta

kts

tro

m[A

]

10 100 1000

0,1

1

5

10



7 Safety notes

WARNING: Risk of electric shock

During operation, parts of electrical switching

devices carry hazardous voltages.

Before working on the switching device, dis-

connect the power.

Please observe the safety regulations of elec-

trical engineering and industrial safety and lia-

bility associations.

Disregarding these safety regulations may re-

sult in death, serious personal injury or damage

to equipment.

Startup, mounting, modifications, and up-

grades should only be carried out by a skilled

electrical engineer!

WARNING: Danger due to faulty devices!

The devices may be damaged following an er-

ror and correct operation can no longer be en-

sured.

In the event of an error, replace the device im-

mediately.

Repairs to the device, especially if the housing

must be opened, may only be carried out by the

manufacturer or authorized persons. Other-

wise the warranty is invalidated.

NOTE: Risk of damage to equipment due to

incorrect installation

For reliable operation, the safety relay must be

installed in housing protected from dust and

humidity (IP54).

Carry out wiring according to the application.

Use the Application Examples section for this

purpose.

NOTE: Risk of damage to equipment due to

noise emissions

When operating relay modules the operator

must meet the requirements for noise emission

for electrical and electronic equipment (EN

61000-6-4) on the contact side and, if required,

take appropriate measures.

NOTE: Electronics may be damaged when

overloaded

Take measures outside the device to limit tran-

sient surge voltages to the respective value for

surge voltage category II.

WARNING: risk of electric shock!

The safety relay may only be connected to de-

vices which meet the requirements of

EN 60950.

Suitable devices are available online at

www.phoenixcontact.net/catalog.



8 Pin assignment

Operating and indication element

Figure 5 PSR-SCP-24DC/ETP/1x1

Figure 6 PSR-SPP-24DC/ETP/1x1

Designa-

tion

Explanation

1 COMBICON plug-in screw terminal blocks

2 COMBICON plug-in spring-cage terminal

blocks

3 Metal lock for mounting on the DIN rail

4 LED status indicator, red - error

5 LED status indicator, green - Power

6 Switch 1

Switch 2

5

6

21

21

LL' LO

LO

PowerError

PSR-ETP

N N'

N

A1

A2N

I

24V

AP

PR

OV

AL

S

Ty

pe

Ap

pro

ve

dT

ÜV

Rh

ein

lan

dR

LA

1

A2

L'

NI

NI'

NN

'

Lo

gic

L0

'L

0

R

1

4

LL' LO

LO

PowerError

PSR-ETP

N N'

N

A1

A2N

I

24V

AP

PR

OV

AL

S

Ty

pe

Ap

pro

ve

dT

ÜV

Rh

ein

lan

dR

LA

1

A2

L'

NI

NI'

NN

'

Lo

gic

L0

'L

0

R

LLO

N'

L'N

N

LO

NI

A2

24V

5

6

1

4



9 Startup

Once the nominal input voltage of 24 V DC has been enabled

at terminals A1 and A2, the Power LED lights up.

The contacts L, L', LO, LO' as well as NI, NI' and N, NI' close.

The 24 V connection should only be wired if the diagnostic

function is to be used and should be set to A2.

The diagnostic function can be switched on or off using the

lower DIP switch (29 on the rear of the device.

Switch in left position: diagnostic function off

Switch in right position: diagnostic function on

The upper DIP switch (1) enables the diagnostic threshold to

be switched from 15 Ohms (left switch circuit) to 35 KOhms

(right switch circuit).

0 - 15 K load OK or 0 - 35 K load OK

If the diagnostics respond, the minimum current consumption

is pushed and a bad channel is generated via A1.

The load is not monitored when the contacts are closed on the

output side.

Figure 7 DIP switches

• Perform a full function and diagnostic test during startup.

1

2


105212_en_00 10PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany

www.phoenixcontact.com

10 Application examples

10.1 Two-channel load connection with diagnostics

enabled

Suitable for low demand applications up to SIL 3

M(N)

K1

K2

0V

24V DC

A1 24V L L´

LO LO´

N N´

NI NI´A2

PSR-ETP/1x1

L+(L1)

24V DC

Line/LoadSicher PLC mit

Diagnose

oder oder

2986711___psr-scp-_24dc-etp-1x1 (1)

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