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 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 contactsThe relays in the series ESM?BA7 are available with electrically separate normally closed contacts and auxiliary contacts.
Connection terminalsOptionally, the ESM-BA… devices are also available as version with plug-in connection terminals.
Dimension drawing
Wiring diagram
Dimension drawingWiring diagram
Technical dataApprovals
Mechanical values and environment
| Housing material | Polyamide PA6.6 |
| Weight | |
| Net | 0,35 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 |
| Number of monitoring outputs | 2 semiconductor outputs |
| Connection | Connection terminals |
| Length of control cable | |
| With conductor cross-section 0.75mm2 | 1000 m |
| Monitoring outputs 01 / 02 | |
| Number of monitoring contacts | 2 |
| Auxiliary contacts 43/44, 53/54, 63/64, 73/74, 101/102, 101/112 | |
| Number of auxiliary contacts | 4 |
| Safety contacts 13/14, 23/24, 33/34, 81/82, 91/92 | |
| Number of safety contacts | 7 |
Electrical connection ratings
| Operating voltage | |
| AC/DC | 24 V -10% … +10% |
| Power consumption (apparent power) | |
| At 24V AC | 8,5 VA |
| Rated insulation voltage Ui | 250 V |
| Rated impulse withstand voltage Uimp | |
| Leakage path/air gaps | 4 kV |
| Overvoltage category according to IEC EN 60664-1 | 3 |
| Reverse polarity protection | |
| On version UB=24V DC | |
| Degree of contamination (external, according to EN 60947-1) | 2 |
| Connecting cable | |
| at 24V DC | 4,5 |
| 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 | |
| S11…S14 | 250 mA |
| LED indicator | 1 status displays operating voltage (Pwr), 2 status displays (green) for relays K1 and K2 |
| Monitoring outputs 01 / 02 | |
| Type of output | |
| Semiconductor output PNP | Short circuit-proof |
| Output voltage | 24 V DC |
| Output current | max.30 mA |
| Auxiliary contacts 43/44, 53/54, 63/64, 73/74, 101/102, 101/112 | |
| Type of output | |
| NO contact / NC contact | Relay contacts, floating |
| Utilization category according to EN 60947-5-1 | |
| AC-15 | 3A, 250V |
| DC-13 | 3A, 24V |
| AC-12 | 8A, 250V |
| DC-12 | 8A ohmic load, 50V |
| Breaking capacity according to UL | |
| Auxiliary contact | 2A 250V AC / 1.5A 24V DC |
| Safety contacts 13/14, 23/24, 33/34, 81/82, 91/92 | |
| Type of output | |
| NO contact / NC contact | Relay contacts, floating and positively driven (redundant) |
| Switching voltage | |
| AC | max.250 V |
| DC | max.50 V |
| Switching current | min.5 mA at 24V |
| Cumulative current | max.35 A For all contacts |
| Fusing | |
| External contact fuses (safety circuit) according to IEC 60269-1 | 10AgG (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 | |
| Safety contacts | 8A 250V AC / 2A 24V DC per contact |
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 13849-1:2008 ; EN 62061:2005 ; EN 60204-1:2007 |
Reliability values according to EN ISO 13849-1
| Performance Level | PL e |
| Category | 4 |
| PFHD | 2.47 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 |
