• ESM-BA.. Usage up to category 4 according to EN ISO 13849-1
• LED status indicators
• 1-channel or 2-channel control
• 7 redundant safety contacts
• 4 auxiliary contacts
• 2 monitoring contacts
• Short circuit and earth fault/ground fault monitoring optional
• Plug-in connection terminals

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. Important:Two connection kits must be ordered for this device. 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	Plug-in 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
? 2 A at 24 V DC	max.100000 1/Jahr
? 1 A at 24 V DC	max.350000 1/Jahr
Mission time	20 y

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