Features
- ESM-BA.. Usage up to category 4 according to EN ISO 13849-1
- LED status indicators
- 1-channel or 2-channel control
- 3 redundant safety contacts
- 1 auxiliary contact (signaling contact)
- Short circuit and earth fault/ground fault monitoring
- 24 V DC for ESM-BA301
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 or a 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.
Auxiliary contacts
The relays in the series ESM-BA3.. are available with electrically separate normally closed contacts and auxiliary contacts.
Connection terminals
Optionally, the ESM-BA... devices are also available as version with plug-in connection terminals.
Mechanical figures and environment
| Housing material | Polyamide PA6.6 |
| Ground | |
| Net | 0,23 kg |
| Ambient temperature | -15 ... 40 °C |
| Degree of protection | IP20 |
| Mechanical life | |
| operating cycles | 10 x 106 |
| Contact material | AgSnO2 |
| Installation 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 | |
| Number of safety contacts | 3 |
| Auxiliary contacts 41/42 | |
| Number of auxiliary contacts | 1 |
Electrical connection ratings
| Operating voltage | |
| AC/DC | 24 V -10% ... +10% |
| Rated insulation voltage Ui | |
| AC | 250 V |
| Rated impulse withstand voltage Uimp | |
| Leakage path/air gaps | 4 kV |
| Over voltage category according to IEC EN 60664-1 | 3 |
| Reverse polarity protection | |
| On version UB =24V DC | |
| Rated supply frequency | 50 ... 60 Hz |
| Power consumption | |
| at 24 V DC | 2,3 W |
| Degree of contamination (external, according to EN 60947-1) | 2 |
| Connection cross-section | 0,14 ... 2,5 mm² |
| Test voltage | |
| Control system/contacts | 2,5 kV |
| Control voltage | |
| On S11 | 18,6 ... 24 V 26 V Start button |
| Control current | |
| S11...S14 | 60 mA |
| LED indicator | 2 status displays (green) for relays K1 and K2 |
| Safety contacts 13/14, 23/24, 33/34 | |
| Type of output | |
| NO | Relay contacts, floating and positively driven (redundant) |
| switching voltage | |
| AC | max. 250 V |
| DC | max. 24 V |
| Switching current | |
| at 24V | min. 5 mA |
| Cumulative current | For all contactsmax. 15 A |
| Fusing | |
| External contact fuses (safety circuit) according to IEC 60269-1 | 10A gG (T6A / F8A) |
| Utilization category acc. 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 |
| Auxiliary contacts 41/42 | |
| Type of output | |
| NC | Relay contacts, floating |
| Utilization category acc. to EN 60947-5-1 | |
| AC-12 | 2A , 250V |
| DC-12 | 2A, 50V |
| Breaking capacity according to UL | 2A, 250V AC / 2A, 24V DC per contact |
Miscellaneous
| 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 13849-1:2008 ; EN 62061:2005 ; EN 60204-1:2007 |
Reliability values according to EN ISO 13849-1
| Performance Level | PL e |
| Category | 4 |
| PFHd | 1.2 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 |
