Typical Schematic Diagram

22/08/06

Emergency Stop Relay BD 5987 complies fully with the requirementsof the Standard Specifications referred to on page X. The unit ishoused in a compact 45 mm case suitable for DIN rail mounting and isavailable in a wide range of auxiliary voltages. It differs from BN 5983described previously in that it employs failsafe electronic circuitry forthe self checking function and is limited to 2 N/O output contacts.Otherwise the principle of operation is the same.

The OFF and the EMERGENCY STOP buttons are connected in seriesbetween terminals S33 and S12/S22.The On/Reset button isconnected between terminals Y2 and S22, or S12. The auxiliarysupply is connected to terminals A1(+) and A2 (–).The circuits to betripped may be connected to terminals 13–14 and 23–24. When theEMERGENCY STOP button is activated power is removed fromterminals S12/S22, relays K2 and K3 are de-energised and contacts13–14 and 23–24 open. BD 5987.02 is equipped with short circuitmonitoring of the On/Reset button, this relay is suitable for up toCategory 3 and manual restart applications only. BD 5987.02/001 isequipped with cross fault monitoring of the stop button circuit, and issuitable for up to Category 4 and auto restart applications.

The relay is equipped with three green LEDs. When illuminated theyindicate the healthy condition of the auxiliary supply and circuitsK2 - K3.

BD 5987.02Manual reset only

Category 3 applications

It is recommended that redundancy is carried through to theEMERGENCY STOP button by using a dual contact button as shown.If a single contact button is used then terminals S12 and S22 shouldbe bridged. (Category 2 applications only).

Diag 1

• Category 4 (/001), SIL CL3• Category 3• Contacts 2 N/O (5 m gold plated)• Compact 45 mm wide case• Internal auxiliary power supply protection with

automatic reset• AC or 24V DC auxiliary power supply options• Link programmable

Single or dual channel operationAuto or manual reset (/001)Short circuit/link monitoring of Estop and resetpushbuttons

Type BD 5987safemaster

Emergency Stop Relay

Features

Description

Circuit Connections

Indication

Special Note

Model BD 5987.02/001, BD 5987.02

CANADA USATechnical Committee

of Electrical Engineer-ing

OFF

EMERG.STOP

A1(+)

PE(–)

2414 S12 S12 S33 S33 S34

23 S22 S3313 Y1 Y2

K2

K3

N

L

2313

14 24

A2(–)

ON

LOG

IC

OFF

EMERG.STOP

A1(+)

PE(–)

2414 S12 S12 S33 S33 S34

23 S22 S3313 Y1 Y2

K2

K3

C2C1

2313

14 24

A2(–)

C1.1 C2.1

ON

LOG

IC

N

L

C2.2

C1.2

L

BD 5987.02 with External Contactors.This diagram shows how external contactors with positive guided contactsC1 and C2 may be used to reinforce the switching capacity of BD 5987with continued redundancy.

Diag 2

1

Emergency Stop Relay

Schematic Diagram

Dimensions Safety Modules

Type BD 5987safemaster

If additional switching contacts are required then Relay BD 5987 maybe used with extension module Type BG/LG 5929 / BN 3081 (see text).Should a timed delayed release contact be required then BD 5987 maybe used with time delay modules BG 7925 / BG 7926 / IL 7824 / IN 7824/ BA 7924 (see diag 5/ 6). Model BD 5987 can be used with protectiveguards/screens and an insulation monitoring relay may be connectedto monitor PE(-) to ground.

NB: When BD 5987.02/001 is used in automatic reset mode, there willbe a 900 ms delay on restart.

2

Weight 0.3 Kg

EMERG.STOP

A1(+)

S21PE

2414 S12 S33 X5 X6 S34

23 S12 S2213 S23 S33

K2

K3

N

L

2313

14 24

A2(–)

LOG

IC

A1(+)

PE(–)13 23 S22 S33 Y1 Y2

S34

A1 27 15

1628A2

23

2414

13

S33S33S12S122414 A2(–)

K2

LOG

IC

K3

ONRESET

EMERG.STOP

L

N

OFF

TIMEDDELAYEDRELEASECONTACT

A1(+)

S21PE

2414 S12 S33 X5 X6 S34

23 S12 S2213 S23 S33

K2

K3

N

L

2313

14 24

A2(–)

LOG

IC

GA

TE C

LOSE

D

S2

S1A1(+)

S21PE13 23 S12 S22 S23 S33

S34

A1 27 15

1628A2

23

2414

13

X6X5S33S122414 A2(–)

K2

LOG

IC

K3

ONRESET TIMED

DELAYEDRELEASECONTACT

EMERG.STOP

L

N

OFF

BD 5987.02Auto reset

NB: If manual reset is required remove link X5 – X6 and connectN/O pushbutton between X5 – S34

Category 4 applicationsWith Cross Fault monitoring of ESTOP circuits

Diag 3

BD 5987.02 with additional delayed release safety timer IL 7824,IN 7824, BA 7924

Category 3 applicationsManual reset only

Diag 5

BD 5987.02/001 used as a safety gate monitor with auto reset

Category 3 applications Diag 4

BD 5987.02/001 with additional delayed relaese safety timer IL 7824,IN 7824, BA 7924

Category 3 applicationsManual reset.

Diag 6

Specifications

BD 5987 Versions

3

BD 5987.02/001 BN 3081 BN 3081

Nominal Voltage (Vn) 24, 48, 110, 127, 230V acor 24V dc (to be specified)

Burden <5VA ac/3W 24V dcVoltage Tolerance 0·8–1.1Vn ac 0·8–1·2Vn dc

Frequency 50 to 60Hz ±5%Control Voltage 24V dc (S33)

Min. Return Voltage 18·5V (S12/S22)Contacts Gold Plated 5 microns

Max Switching Capacity 10A ac (cos ø 1–0.7)10A dc see page XX

Continuous Current Rating See page xxContact Life Mechanical 30 x 106 operationsContact Life Electrical See page xx

Derated Capacity AC15, 6A, 250V ac(for Heavy Inductive Loads) DC13, 6A, 24V dc

Min. Switching Voltage & Current 0·1– 60V, 1– 300mAMax Switching Voltage 250Vac, 250VdcMax. Switching Power 2500VA (AC1) 240W dc

Max. Switching Frequency 6000 operations/hourMax. Loop Resistance 110Ω

S33/S12–S22Dual Channel Operation

Reaction Times Manual reset 100msAuto reset 900msESTOP<20ms

Operating Temperature –15°C...+55°C at 90% RHProtection Class Case IP40 terminals IP20

Test Voltage 2·5KV 1 minuteShock Loading Amplitude 0.35mm

Frequency 10–55Hz(5g @ 50Hz)

Enclosure Material Thermoplastic VO Rating UL94Terminations 1 x 4mm2 solid

2 x 2·5mm2 solid1 x 2·5mm2 stranded ferruled1 x 1·5mm2 stranded

BD 5987.02/001 used as a light barrier monitor and/or safetymat monitor with cross fault monitoring of the safety controlcontacts and link monitoring of the reset circuit.

BD 5987.02/001 2 N/O (auto or manual monitored reset)BD 5987.02 2 N/O (manual monitored reset only)BD 5987.03/001 2 N/O, 1 N/O (non redundant contact)BD 5987.16/001 1 N/O, 1 N/C (redundant contact)

NB: BD 5987.03/001 has a built in time delay of 20 ms between the 2N/O contacts and 1 N/O Auxiliary contact. This is a useful featurewhen used in drive applications.

Diag 7

Diag 8

Type BD 5987safemaster

Information Required With Order• Model type • Auxiliary supplyExample: Emergency Stop Relay Type BD 5987.02/001Auxiliary Supply 230V 50Hz

Emergency Stop Relay

Model BD 5987.02/001 with BN 3081 Extension modules

33 43 53 63 73736333 43 53A1(+)

S21PE13 23 S12 S22 S23 S33

S34X6X5S33S122414 A2(–)

812313A3A1

A2 A4 14 24 34 44 54 64 8274 74 826454443424A4 14A2

2313A3A1 81

K2

13 23

14 24

K3LOG

ICK1

K2

K1

K2

ON/RESET

OFF

EMERG.STOP

L

N

A1(+)

S21PES13 23 S12 S22 S23 S33

S34

2414

2313

X6X5S33S122414 A2(–)

K2

LOG

IC

K3

ONRESET

SAFETYMAT

OR EDGE

LIGHTBARRIER

L

N