EUCHNER – More than safety.
EUCHNER – More than safety.

ESM-BT401 (Order no. 090818)

Safety relay ESM-BT.., 4 safety contacts, time-delay, cat. 4

  • Use up to category 4 according to EN ISO 13849-1
  • LED status indicators
  • 1-channel or 2-channel control
  • 4 redundant safety contacts of which 3 contacts time-delayed
  • Delay time range 1 s–30 s
  • Short circuit and earth fault/ground fault monitoring
ESM-BT401 (Order no. 090818)

Description

Relay outputs

The outputs are electrically decoupled and of redundant design.

Connection options

By using suitable wiring, the following functions can be selected:

  • Relay start with automatic start, a start button or a monitored start button
  • Monitoring of downstream relays or contactors.
  • Simultaneity monitoring to monitor safety components over time
  • Relay start using a monitored start button
  • Short circuit monitoring to detect short circuits between the connecting cables and to shut down the outputs or prevent relay starting if necessary
  • Earth fault/ground fault monitoring to detect short circuits between the connecting cables and earth or ground and to shut down the outputs or prevent relay starting if necessary.

Time-delayed shutdown

The release time for the time-delay contacts can be set as required using a potentiometer on the safety relay.

Dimension drawing
Dimension drawing
Wiring diagram
Wiring diagram

Dimensional drawings

Dimensional drawings

Connection examples

Connection examples

Technical data

Approvals

EAC_RU C-DE.MO05.B.00971/20c_UL_us_E155795_4/1CCC__CQC20012263063

Operating and display elements

LED display 4 status displays (green) for relays K1, K2, K3, K4

Electrical connection values

Drop-out delay at 24 V AC/ DC max. 20 ms Emergency stop
Power consumption
at 24 V DC 4.7 W
Power consumption (apparent power)
at 24 V AC 5.3 VA
Connection cross section 0.14 ... 2.5 mm² (Connection terminals (size))
Rated insulation voltage Ui 250 V
Rated supply frequency 50 ... 60 Hz
Rated impulse withstand voltage Uimp
Leakage path/air gaps 4 kV
Operating voltage
AC/DC 24 V -10% ... +10% (All the electrical connections must either be isolated from the mains supply by a safety transformer according to EN 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent insulation measures.)
Test voltage
Control system/contacts 2.5 kV
Control voltage
on S11 18.6 ... 26 V
Control current 190 mA
Overvoltage category according to IEC EN 60664-1 3
Reverse polarity protection
On version UB = 24 V DC
Degree of contamination (external, according to EN 60947-1) 2

Mechanical values and environment

Connection type Connection terminals
Control cable length
with conductor cross-section 0.75 mm2 1000 m
Mechanical life
Operating cycles 10 x 10⁶
Mounting type Mounting rail 35 mm according to DIN EN 60715 TH35
Degree of protection IP20
Ambient temperature -15 ... +40 °C
Material
Contact AgSnO2
Housing Polyamide PA6.6

Characteristic values according to EN ISO 13849-1 and EN IEC 62061

Number of switching cycles
≤ 1 A at 24 V DC max. 350000 1/y
≤ 0.1 A at 24 V DC max. 500000 1/y
≤ 2 A at 24 V DC max. 100000 1/y
Mission time 20 y (This value is dependent on the number of switching cycles and the switching current.)

Miscellaneous

in compliance with EN ISO 13849-1: 2015; EN 62061: 2005 + AC 2010 + A1: 2013 + A2: 2015; EN50581: 2012 (RoHS)

Downloads

Complete package

Download all important documents with a single click.

Content:

  • The operating instructions and any additions to the operating instructions or brief instructions
  • Any data sheets to supplement the operating instructions
  • The declaration of conformity
Download Complete Package (ZIP, 2,8 MB)

Single Documents

Other Documents

Ordering data

Ordernumber 090818
Item designation ESM-BT401
Gross weight 0,254kg
Customs tariff number 85364110
ECLASS 27-37-18-19 Device for monitoring of safety-related circuits

Technical support

Technical support
Do you have technical questions about our products, their possible use or applications? Our experts will be happy to help.

EUCHNER (UK) Ltd.
+44 114 2560123
sales(at)euchner.co.uk

EUCHNER USA Inc.
+1 315 701-0315
info(at)euchner-usa.com