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-BT401
Dimension drawingESM-BT401
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, 27/28, 37/38,47/48 | |
| 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 | max.20 ms Emergency stop |
| LED indicator | 4 status displays (green) for relays K1, K2, K3, K4 |
| Safety contacts 13/14, 27/28, 37/38,47/48 | |
| Type of output | |
| NO | Relay contacts positively driven (redundant) |
| Switching voltage | |
| AC | max.250 V |
| DC | max.50 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 time-delayed, 1 safety contact non-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 | |
| ? 0.1 A at 24 V DC | max.500000 1/Jahr |
| ? 1 A at 24 V DC | max.350000 1/Jahr |
| ? 2 A at 24 V DC | max.100000 1/Jahr |
| Mission time | 20 y |
