KezdőlapProductsSafety relays, control systems and filter moduleSafety relay ESMESM-BT421-50S

ESM-BT421-50S (Rend. sz. 090094)

Basic module 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 1 contact time-delayed
  • Time delay 5 s
  • Short circuit and earth fault/ground fault monitoring
ESM-BT421-50S (Rend. sz. 090094)

Ismertetés

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

Time delay 5 s

Dimension drawing
Dimension drawing
Wiring diagram
Wiring diagram

Dimensional drawings

Dimensional drawings

Connection examples

Connection examples

Műszaki adatok

Approvals

c_UL_us_E155795_4/1CCC2024010305659956_ESM

Operating and display elements

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

Electrical connection values

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))
Response delay
after actuating the pushbuttons max. 20 ms
Outputs
NumberTypeFunctionFootnote
4Relay contacts, redundant, 3 non-delayed / 1 delayedSafety contacts 13-14, 23-24, 33-34, 47-48(Normally open contact)
Rated insulation voltage Ui 250 V
Rated supply frequency 50 ... 60 Hz
Rated impulse voltage Uimp 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 voltage / contacts 2.5 kV
Control voltage
to S11 DC 24 V
Control current
S11...S14 190 mA
Over voltage category III
Reverse polarity protection
On version UB = 24 V DC Yes
Degree of contamination (external, according to EN 60947-1) 2
Safety contacts 13-14, 23-24, 33-34, 47-48
Output type Relay contacts, redundant, non-delayed / delayed
Cumulative current max. 15 A for all contacts ("When multiple ESM-BT4.. units are connected in series under load, the maximum cumulative current at an ambient temperature of T = 20 °C: 9 A; at T = 30 °C: 3 A; at T = 40 °C: 1 A. If these currents are exceeded, a distance of 5 mm must be maintained between the devices.")
Time delay 5 s fixed

Mechanical values and environment

Connection type Connection terminals
Storage temperature -25 ... 70 °C
Control cable length
with conductor cross-section 0.75 mm2 1000 m
Mechanical life
operating cycles 10 x 10⁶
Mounting type Mounting rail TH 35 (EN IEC 60715)
Degree of protection IP20
Ambient temperature -15 ... 40 °C (When multiple ESM-BT4.. units are closely spaced under load, the maximum cumulative current at an ambient temperature of T = 20 °C is: 9 A; at T = 30 °C: 3 A; at T = 40 °C: 1 A. If these currents are exceeded, a spacing of 5 mm must be maintained between the devices.)
Material
Contact AgSnO2
Housing Polyamide PA6.6

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

PLMaximum SILPFHDCategoryMission time
Evaluating safety signalsDelayedPL e-8.84x10-8320 y
Only applies with switching voltage 24V DC and switching current up to 0.1 A (max. switching cycles 500,000 1/y) OR up to 1 A (max. switching cycles 350,000 1/y) OR up to 2 A (max. switching cycles 100,000 1/y)
undelayedPL e-4.22x10-8420 y
Only applies with switching voltage 24V DC and switching current up to 0.1 A (max. switching cycles 500,000 1/y) OR up to 1 A (max. switching cycles 350,000 1/y) OR up to 2 A (max. switching cycles 100,000 1/y)


Miscellaneous

in compliance with siehe Konformitätserklärung

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Rendelési adatok

Rend. sz. 090094
Cikk neve ESM-BT421-50S
Súly 0,252kg
Vámtarifaszám 85364110
ECLASS 11.0 27-37-18-19 Device for monitoring of safety-related circuits