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Control Relays and Timers
Safety Relays 40.10 Safety Relays
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Application Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Standards and Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Technical Data and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Note: Supplement to Volume 7—Motor Controls, Logic and Connectivity, CA08100008E, Tab 40.
2 Control Relays and Timers CA04902001E—March 2011 www.eaton.com
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40.10
Control Relays and Timers
Safety Relays
Safety Relays Contents
Description Page
Safety Relays
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Technical Data and Specifications . . . . . . . . . . . . . . . . . 4
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Product Description
Safety relays are intended to
reliably monitor the signals
from safety devices at all
times and switch off quickly
and reliably in an emergency.
Single-channel and dual
channel versions are available
for the construction of safety
applications. The internal
logic of the safety relays
monitors the safety circuits
(emergency stop, guard door,
and so on) and activates the
enable paths in a fault-free
condition. Upon actuation of
the safety device or in the
even of a fault, the enable
paths are switched off. Any
faults that occur in the control
circuit, such as ground fault,
cross connection fault or wire
breakage are also detected.
Application Description
Eaton’s ESR5 safety relays
provide optimal safety and a
high degree of reliability on
plant machinery. Applications
that meet the highest
safety requirements in
accordance with EN 954-1,
EN ISO 13849-1 up to PL e
and accordance with
IEC 62061 up to SILCL 3
can be realized with the
ESR5 safety relay.
Compatible with a wide
variety of safety devices:
●Emergency stops
●Rope pulls
●Two-hand control stations
●Light curtain (OSSD)
●Gate enable device
●Safety switches
Features
●Use for the highest
safety requirements in
accordance with EN 954-1
EN ISO 13849-1,
IEC 62061 and EC 61508
●Suitable for the world
market with UL, cUL
certifications and TÜV
Rhineland functional
safety certifications
●Applicable for EN 60204
stop categories 0 or 1
●Plug-in screw terminals
for fast and fault-free
replacement
●Multi-voltage versions
(24–230 Vac/Vdc) for a
flexible range of application
●Delayed and non-delayed
contact expansions
accommodate a wide
variety of applications
Standards and
Certifications
●UL 508; CSA-C22.2 No
14-95; CE Marked
●UL/cUL file number:
E29184
●Degree of protection: IP20
●TÜV Rhineland certified
●UL/cULus listed
Control Relays and Timers CA04902001E—March 2011 www.eaton.com 3
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40.10
Control Relays and Timers
Safety Relays
Product Selection
Technical Overview
Application Overview
Application Overview, continued
Notes
Laser scanners or light curtains with OSSD outputs.
All main units can also be reset automatically or manually.
Single
Channel
Dual
Channel
Safety
Output (NO)
Safety
Output (NO)
(Delayed)
Output
Delay
Signal
Output
(NC)
Feedback
Output
Control
Voltage
Removable
Terminal
Blocks
Type of
Unit Catalog Number
■ — 4 — — 1 — 24 Vac/Vdc ■ Main ESR5-NO-41-24VAC-DC
■ ■ 2 — — 1 — 24 Vac/Vdc ■ Main ESR5-NO-21-24VAC-DC
■ ■ 3 — — 1 — 24 Vac/Vdc ■ Main ESR5-NO-31-24VAC-DC
■ ■ 3 — — 1 — 230 Vac ■ Main ESR5-NO-31-230VAC
■ ■ 3 — — 1 — 24–230 Vac/Vdc ■ Main ESR5-NO-31-AC-DC
■ ■ 2 2 0.1–30s — — 24 Vdc ■ Main ESR5-NV3-30
—■ 2 — — 1 — 24 Vac/Vdc ■ Main ESR5-NZ-21-24VAC-DC
■ — 5 — — 1 1 24 Vac/Vdc ■ Expansion ESR5-NE-51-24VAC-DC
■ — — 4 0.3–3s 1 1 24 Vdc ■ Expansion ESR5-VE3-42
Emergency
Stop
Safety
Switches
Light Curtain/
OSSD
Two-Hand Control
(EN 574 Type III C)
Contact
Expansion Off-Delayed
Cross Circuit
Recognition
Monitored
Manual Reset Catalog Number
■ ■ —— ——— — ESR5-NO-41-24VAC-DC
■ ■ —— ——■ — ESR5-NO-21-24VAC-DC
■ ■ —— ——■ — ESR5-NO-31-24VAC-DC
■ ■ —— ——■ ■ ESR5-NO-31-230VAC
■ ■ —— ——■ ■ ESR5-NO-31-AC-DC
■ ■ ■ ——
■ ■ ■ ESR5-NV3-30
—■ — ■ —— ■ — ESR5-NZ-21-24VAC-DC
——— — ■ —— — ESR5-NE-51-24VAC-DC
——— — ■ ■ —— ESR5-VE3-42
Single
Channel
Dual
Channel
Stop Category
EN 60204
Control Category
to EN 954-1
Achievable PL per
ISO 13849-1
Achievable SIL per
EN IEC 62061 Catalog Number
■ — 0 2 PL d SIL 3 ESR5-NO-41-24VAC-DC
■ ■ 0 4 PL e SIL 3 ESR5-NO-21-24VAC-DC
■ ■ 0 4 PL e SIL 3 ESR5-NO-31-24VAC-DC
■ ■ 0 4 PL e SIL 3 ESR5-NO-31-230VAC
■ ■ 0 4 PL e SIL 3 ESR5-NO-31-AC-DC
■ ■ 0/1 4 PL e SIL 3 ESR5-NV3-30
—■ 0 4 PL e SIL 3 ESR5-NZ-21-24VAC-DC
■ — 0 4 PL e SIL 3 ESR5-NE-51-24VAC-DC
■ — 1 3 PL d SIL 2 ESR5-VE3-42
Safety Relays
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40.10
Control Relays and Timers
Safety Relays
Technical Data and Specifications
Safety Relay
Description Unit ESR5-NO-21_ ESR5-NO-41_ ESR5-NO-31-24VAC-DC ESR5-NZ-21_
General
Standards EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
Type-dependent standards — — — EN 574 Part no. IIIC
Lifespan, mechanical—c (contacts) x 10610 10 10 10
Maximum operating frequency Ops/h 3600 3600 3600 3600
Climatic proofing Cold according to
EN 60068-2-1, dry heat
according to EN60068-2-2,
damp heat according to
EN 60068-2-3
Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Cold according to
EN 60068-2-1, dry heat
according to EN60068-2-2,
damp heat according to
EN 60068-2-3
Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Ambient temperature °F (°C) –4° to 131° (–20° to 55°) –4° to 131° (–20° to 55°) –4° to 131° (–20° to 55°) –4° to 131° (–20° to 55°)
Ambient temperature storage °F (°C) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°)
Mounting position Any Any Any Any
Vibration resistance (IEC/EN 60068-2-6) 2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2 g, frequency: 10–150 Hz,
amplitude: 0.15 mm
Shock resistance (IEC 60068-2-27) ————
Protection type
Housing IP20 IP20 IP20 IP20
Terminals IP20 IP20 IP20 IP20
Protection against direct contact when
actuated from front (IEC 0106 Part 100)
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Weight kg 0.17 0.22 0.17 0.22
Terminal capacity
Solid or flexible mm21 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
Flexible with ferrule mm21 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
Solid or stranded AWG 24–12 24–12 24–12 24–12
Terminal screw
Pozidriv screwdriver Size 2222
Flat-blade screwdriver mm 0.6 x 3.5 0.6 x 3.5 0.6 x 3.5 0.6 x 3.5
Max. tightening torque Nm 0.6 0.6 0.6 0.6
Main Contacts
Rated impulse withstand voltage—Uimp Vac 6000 4000 4000 6000
Overvoltage category/pollution degree
Outside III/2 III/2 III/2 III/2
Inside ————
Rated insulation voltage—UiVac 250 250 250 250
Rated operating voltage—UeVac 230 230 230 230
Rated operation current
AC-15
230V (360 ops./h)—IeA5454
230V (3600 ops./h)—IeA3333
DC-13
24V (360 ops./h)—IeA6464
24V (3600 ops./h)—IeA 3 2.5 3 2.5
Max. summation current of all poles
24 Vac/Vdc devices A 72 72 72 72
230 Vac devices A ————
Square of the total current
(and total current)
of all current paths
72 A2 (6 + 6) 72 A2 (4.2 + 4.2 + 4.2 + 4.2) 72 A2 (4.9 + 4.9 + 4.9) 72 A2 (6 + 6)
Short-circuit protection
Max. fuse A gG/gL 10 6 10 6
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40.10
Control Relays and Timers
Safety Relays
Safety Relay, continued
Description Unit ESR5-NO-21_ ESR5-NO-41_ ESR5-NO-31-24VAC-DC ESR5-NZ-21_
Power Supply Circuit
Actuating voltage 50/60 Hz Vac 24 24 24 24
Actuating voltage—UsVdc 24 24 24 24
Voltage tolerance pick-up voltage x e0.85–1.1 0.85–1.1 0.85–1.1 0.85–1.1
Power consumption
AC operated 50/60 Hz VA ————
AC operated 50/60 Hz W 3.4 3.4 3.4 3
DC operated W 1.6 1.6 1.6 1.5
Fuse for control circuit supply
24V Short-circuit proof Short-circuit proof Short-circuit proof Short-circuit proof
115/230V ————
Control Circuit
Rated output voltage Vdc 24 24 24 24
Rated operational current mA S12, S22: 30, S34: 45 S12: 65, S34: 40 S12, S22: 30, S34: 45 S11, S21: 60, Y2: 45
Resistance—R 50 22 50 22
Short-circuit current A 2.3 2.3 2.3 2.3
Response time ms 100 65 100 50
Recovery time ms ————
Response time with reset monitoring—tA1 ms————
Response time without reset monitoring—tA2 ms 100 65 100 50
Reset time—tR/tR1 ms Single-channel 45;
dual-channel 10
45 Single-channel 45;
dual-channel 10
20
Minimum on duration—tMms————
Recovery time—tWms Approx. 1000 Approx. 1000 Approx. 1000 Approx. 1000
Synchronous monitoring time—tSms — — — 500
Electromagnetic Compatibility (EMC)
Emitted interference EN 61000-6-4 EN 61000-6-4 EN 61000-6-4 EN 61000-6-4
Interference immunity According to EN 61000-6-2,
EN 62061
According to EN 61000-6-2 According to EN 61000-6-2,
EN 62061
According to EN 61000-6-2
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40.10
Control Relays and Timers
Safety Relays
Safety Relay, continued
Description Unit ESR5-NO-31-230VAC
ESR5-NO-31-24V-
230VAC-DC ESR5-NV3_ ESR5-VE3_ ESR5-NE-51_
General
Standards EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
EN ISO 13849-1, IEC 62061,
IEC 61508, DIN EN 50178,
UL/CUL listed
Type-dependent standards EN 60204
(if applicable)
EN 60204
(if applicable)
EN 60204
(if applicable)
——
Lifespan, mechanical—c (contacts) x 10610 10 10 10 10
Maximum operating frequency Ops/h 3600 3600 3600 900 3600
Climatic proofing Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Cold in accordance with:
EN 60068-2-1, dry heat in
accordance with EN
60068-2-2, humidity
storage test in accordance
with 60068-2-78
Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Dry heat according to
EN60068-2-2, damp heat
according to EN 60068-2-3
Ambient temperature °F (°C) –4° to 131° (–20° to 55°) –4° to 131° (–20° to 55°) –4° to 113° (–20° to 45°) –4° to 131° (–20° to 55°) –4° to 131° (–20° to 55°)
Ambient temperature storage °F (°C) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°) –13° to 167° (–25° to 75°)
Mounting position Any Any Any Any Any
Vibration resistance (IEC/EN 60068-2-6) 2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
2g, frequency: 10–150 Hz,
amplitude: 0.15 mm
Shock resistance (IEC 60068-2-27) —————
Protection type
Housing IP40 IP40 IP20 IP20 IP20
Terminals IP20 IP20 IP20 IP20 IP20
Protection against direct contact when
actuated from front (IEC 0106 Part 100)
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Finger- and back-of-hand
proof
Weight kg 0.3 0.3 0.17 0.17 0.22
Terminal capacity
Solid or flexible mm21 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
1 x (0.2–2.5)
2 x (0.2–1)
Flexible with ferrule mm21 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
1 x (0.25–2.5)
2 x (0.25–1)
Solid or stranded AWG 24–12 24–12 24–12 24–12 24–12
Terminal screw
Pozidriv screwdriver Size 22222
Flat-blade screwdriver mm 0.6 x 3.5 0.6 x 3.5 0.6 x 3.5 0.6 x 3.5 0.6 x 3.5
Max. tightening torque Nm 0.6 0.6 0.6 0.6 0.6
Main Contacts
Rated impulse withstand voltage—Uimp Vac 6000 6000 4000 4000 4000
Overvoltage category/pollution degree
Outside III/2 III/2 III/2 III/2 III/2
Inside —————
Rated insulation voltage—UiVac 250 250 250 250 250
Rated operating voltage—UeVac 230 230 230 230 230
Rated operation current
AC-15
230V (360 ops./h)—IeA44—54
230V (3600 ops./h)—IeA33333
DC-13
24V (360 ops./h)—IeA44—64
24V (3600 ops./h)—IeA 2.5 2.5 3 3 2.5
Max. summation current of all poles
24 Vac/Vdc devices A 50 50 49 50 50
230 Vac devices A 50 50 — — —
Square of the total current
(and total current)
of all current paths
50 A2 (4 + 4 + 4) 50 A2 (4 + 4 + 4) 50 A2 (4 + 4 + 4) 49 A2
(3.5 + 3.5 + 3.5 + 3.5)
50 A2
(3.7 + 3.7 + 3.7 + 3.7
+ 3.7)
Short-circuit protection
Max. fuse A gG/gL 6 6 10 10 6
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40.10
Control Relays and Timers
Safety Relays
Safety Relay, continued
Dimensions
Approximate Dimensions in Inches (mm)
Safety Relays, Contact Expansion Modules
ESR5_ 24 Vac/Vdc ESR5_ 230 Vac
Description Unit ESR5-NO-31-230VAC
ESR5-NO-31-24V-
230VAC-DC ESR5-NV3_ ESR5-VE3_ ESR5-NE-51_
Power Supply Circuit
Actuating voltage 50/60 Hz Vac 230 24–230 — — 24
Actuating voltage—UsVdc — 230 24 24 24
Voltage tolerance pick-up voltage x e0.85–1.1 0.85–1.1 0.85–1.1 0.85–1.1 0.8–1.1
Power consumption
AC operated 50/60 Hz VA —————
AC operated 50/60 Hz W 5.8 5.8 — — 2.2
DC operated W 2.9 2.9 1.8 2 2.2
Fuse for control circuit supply
24V — Short-circuit proof — — —
115/230V Short-circuit proof Short-circuit proof — — —
Control Circuit
Rated output voltage Vdc 24 24 24 24 24
Rated operational current mA S10, S12, S22: 35, S34,
S35: 45
S10, S12, S22: 35, S34,
S35: 45
S12, S22: 3.5, S34, S35: 7 A1, A2: 84, K1/K2: 5 A1, A2: 92
Resistance—R 11 11 500 — —
Short-circuit current A 0.7 0.7 0.1 — —
Response time ms 250 250 150 20 20
Recovery time ms —————
Response time with reset
monitoring—tA1
ms 60 60 150 20 20
Response time without reset
monitoring—tA2
ms 250 250 150 20 20
Reset time—tR/tR1 ms 20 20 20 (non-delayed enable
paths); 100 (min. delayed
enable paths)
0.3–3 s (+50%)
adjustable
20
Minimum on duration—tMms—————
Recovery time—tWms Approx. 1000 Approx. 1000 Approx. 330 Approx. 1000 —
Synchronous monitoring time—tSms—————
Electromagnetic Compatibility (EMC)
Emitted interference EN 61000-6-4 EN 61000-6-4 EN 61000-6-4 EN 61000-6-4 EN 61000-6-4
Interference immunity According to
EN 61000-6-2
According to
EN 61000-6-2
According to EN 61000-6-2,
EN 62061
According to
EN 61000-6-2
According to
EN 61000-6-2
0.88
(22.5)
0.26
(6.6)
4.51
(114.5)
3.74
(95.1)
3.26
(82.8)
2.62
(66.5)
3.06
(77.6)
3.90
(99.0)
0.26
(6.6)
4.51
(114.5)
3.74
(95.1)
3.06
(77.6)
3.90
(99.0)
3.26
(82.8)
2.62
(66.5)
1.77
(45.0)
Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
877-ETN-CARE (877-386-2273)
Eaton.com
©2011 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. CA04902001E / Z10889
March 2011
Eaton is a registered trademark of Eaton
Corporation. All oher trademarks are
property of their respective owners.
Eaton’s Electrical Sector is
a global leader in power
distribution, power quality,
control and automation, and
monitoring products. When
combined with Eaton’s full-scale
engineering services, these
products provide customer-
driven PowerChain™ solutions
to serve the power system
needs of the data center,
industrial, institutional, public
sector, utility, commercial,
residential, IT, mission critical,
alternative energy and OEM
markets worldwide.
PowerChain solutions help
enterprises achieve sustainable
and competitive advantages
through proactive management
of the power system as a
strategic, integrated asset
throughout its life cycle,
resulting in enhanced safety,
greater reliability and energy
efficiency. For more information,
visit www.eaton.com/electrical.
