Описание

  • Usage 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
  • Delay time-range 1 s - 30 s
  • Short circuit and earth fault/ground fault monitoring
Relay outputsThe outputs are electrically decoupled and of redundant design. Connection optionsBy 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 connection cables and to shut down the outputs or prevent relay starting if necessary
  • Earth fault/ground fault monitoring to detect short circuits between the connection cables and earth or ground and to shut down the outputs or prevent relay starting if necessary.
Time-delayed shutdownThe release time for the time-delay contacts can be set as required using a potentiometer on the safety relay. Dimension drawing ESM-BT421 Dimension drawingESM-BT421 Technical dataApprovals Mechanical values and environment
Housing material Polyamide PA6.6
Weight
Net 0,25 kg
Ambient temperature -15 ... 40 °C
Degree of protection IP20
Mechanical life
operating cycles 10 x 106
Contact material AgSnO2
Mounting method Mounting rail 35mm according to DIN EN 60715 TH35
Connection Connection terminals
Length of control cable
With conductor cross-section 0.75mm2 1000 m
Safety contacts 13/14, 23/24, 33/34, 47/48
Number of safety contacts 4
Electrical connection ratings
Operating voltage
AC/DC 24 V -10% ... +10%
Power consumption (apparent power)
At 24V AC 5,3 VA
Rated insulation voltage Ui 250 V
Rated impulse withstand voltage Uimp
Leakage path/air gaps 4 kV
Reverse polarity protection
On version UB =24V DC
Rated supply frequency 50 ... 60 Hz
Power consumption
at 24V DC 4,7 W
Degree of contamination (external, according to EN 60947-1) 2
Connection cross-section 0,14 ... 2,5 mm? Connection terminal (size)
Test voltage
Control system/contacts 2,5 kV
Control voltage
On S11 24 V 18,6 ... 26 V Start button
Control current 190 mA
Drop-out delay
At 24V AC max.20 ms Emergency stop
at 24V DC max.30 ms Emergency stop
LED indicator 4 status displays (green) for relays K1, K2, K3, K4
Safety contacts 13/14, 23/24, 33/34, 47/48
Type of output
NO Relay contacts positively driven (redundant)
Switching voltage
DC max.50 V
AC max.250 V
Switching current min.5 mA at 24V
Cumulative current max.15 A For all contacts
Fusing
External contact fuses (safety circuit) according to IEC 60269-1 10A gG (T6A / F8A)
Utilization category according to EN 60947-5-1
AC-15 3A, 250V
DC-13 3A, 24V
AC-12 8A ohmic load, 250V
DC-12 8A ohmic load, 50V
Breaking capacity according to UL 8A 250V AC / 3A 24V DC per contact
Switching characteristics 3 safety contacts non-delayed, 1 safety contact time-delayed
Delay time
Continuously adjustable 1 ... 30 s
Other
In compliance with EN 60439-1: 1999 + A1: 2004, EN 60947-1: 2007, EN 60947-5-1: 2004, EN 60947-7-1: 2002, EN 61000-6-2: 2005, EN 61000-6-3: 2007, EN ISO 13849-1: 2015, EN 62061: 2005 + AC: 2010 + A1: 2013 + A2: 2015, EN 60204-1: 2007
Reliability values according to EN ISO 13849-1
Performance Level PL e
Category
Safety contacts non-time-delay 4
Safety contacts time-delay 3
PFHD
Safety contacts non-time-delay 4.22 x 10-8
Safety contacts time-delay 8.84 x 10-8
Number of switching cycles
? 1 A at 24 V DC 300000 1/Jahr
? 0.1 A at 24 V DC 500000 1/Jahr
? 2 A at 24 V DC 100000 1/Jahr
Mission time 20 y
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