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HS3A Non-Contact Safety Switches
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HS3A Non-contact RFID Safety Switches
Key features:
• RFID non-contact interlock switch, Category 4 and PLe (EN/ISO 13849-1) compliant.
• The sensor head with built-in safety function (redundant solid state output with inter-
nal monitoring) eliminates the need for a designated safety module.
• RFID ensures detection of slow-moving, open, sliding, and rattling doors.
• Multicode and unicode sensor heads are available. Unicode sensor head (one sensor
head corresponds to one actuator) prevents tampering with the use of an unassigned
spare actuator.
• Sensor head can be installed in 5 directions.
• Degree of protection IP67. Actuator IP67, IP69K (Note)
Note: IP69K is a degree of protection specied by Deutsches Institüt für Normung (DIN), DW 40050 Part 9 for hot and
high-pressure water.
Interlock Switch
(Sensor Head) Actuator
Part Numbers
HS3A Non-contact RFID Safety Switches
Outputs Type Part Number
Safety output: 2
Monitor output: 1
Multicode HS3A-H21M4
Unicode HS3A-H21U4
Accessories
Name Part Number Remarks
Actuator HS9Z-ZH31 Actuator for both multicode and unicode sensor heads.
Supplied with two M5 × 10 mounting screws (stainless steel)
Terminal Plug
(For serial
connection)
HS9Z-H3TP Used on Y-branch connector when connecting two or more switches in series.
Y-branch Connector
(For serial
connection)
HS9Z-H3YD Used when connecting two or more switches in series.
Plug connector: 8-pin (switch side), 5-pin (cable side)
M12 Plug
Connection Cable
For connecting
two or more
switches in
series
5-pin, 5m HS9Z-H3F505 Used when connecting two or more switches in series.
5-pin plug connector is provided at one end.
5-pin, 10m HS9Z-H3F510
For connecting
a single
switch
8-pin, 5m HS9Z-H3F805 Used when connecting a single switch.
8-pin plug connector is provided at one end.
8-pin, 10m HS9Z-H3F810
M12 Plug Connection Cable
(For serial connection) 5-pin, 5m HS9Z-H3F5M05
Used when connecting two or more switches in series.
5-pin plug connectors are provided at both ends.
5-pin, 10m HS9Z-H3F5M10
See below for an example of accessories required when connecting N number of HS3A switches in series.
HS3A non-contact interlock switch (HS3Z-H214): N pcs.
Actuator (HS9Z-ZH31): N pcs.
Terminal plug (HS9Z-H3TP): 1 pc.
Y-branch connector (HS9Z-H3YD): N pcs.
M12 plug connection cable, open end (HS9Z-H3F5): 1 pc.
M12 plug connection cable, plug connectors at both ends (HS9Z-H3F5M): N–1 pcs.
377
800-262-IDEC (4332) • USA & Canada
HS3A
Non-Contact Safety Switches
Overview XW Series E-Stops Interlock Switches Enabling Switches Safety Control Relays Light Curtains AS-Interface Safety at Work
1705151128
Specications Dimensions (mm)
Applicable Standards
EN60947-5-3 (IFA approval)
EN954-1
EN ISO13849-1
EN62061
GS-ET-14 (IFA approval)
UL508 (UL listed)
CSA C22.2 No.14 (c-UL listed)
Operating Temperature –20 to +55°C (no freezing)
Relative Humidity 5 to 80% (no condensation)
Storage Temperature –25 to +70°C
Pollution Degree 3
Sensor Classication PDF-M (EN60947-5-3)
Performance Level (PL) e (EN ISO 13849-1)
Safety Category 4 (EN ISO 13849-1)
Safety Integrity Level (SIL) 3 (EN 62061)
Degree of
Protection
Interlock Switch
(sensor head) IP67
Actuator IP67, IP69K (Note)
Rated Voltage (UB) 24V DC ±15%
Current Consumption 80mA (at no load)
Dielectric Strength 500V AC
Output
Specications
Safety Output
Semiconductor output, P-channel
Output voltage: Max: UB [V], Min.: UB-1.5 [V]
Maximum output current per safety output: 400 mA
Monitor Output
Semiconductor output, P-channel
Output voltage: Max: UB [V], Min.: 0.8×UB [V]
Maximum output current: 200 mA
Operation
Distance
Turn-on Distance 15mm (typ.)
Assured Turn-on
Distance (Sao) 13mm
Maximum Turn-off
Distance (Sar) 58mm
Response Time
When using a
single switch
260 ms (actuator removed)
150 ms (non-identical input signal at IA/IB)
150 ms (non-identical enabling input state at IA/IB)
300 ms ( short-circuit or cross-circuit at OA/OB, or
internal error)
When using two
or more switches
(max.)
360 ms (actuator removed)
250 ms (non-identical input signal at IA/IB)
400 ms ( non-identical enabling input state at IA/IB)
400 ms ( short-circuit or cross-circuit at
OA/OB, or internal error)
Shock Resistance Operating extremes: 300 m/s2 (11 ms)
Vibration Resistance 10 to 55 Hz, amplitude 0.5 mm
Material PBT
Cable M12 plug connection cable, 8-pin
Weight (approx.) 400g (HS3A-H21)
Attachment System Manual (CD-ROM)
Sensor Head
40 40
40.5
56.5
13
34
20.5 M12×1
7
47
30
ø5.5
Actuator
ø5.2
10
4
Active Face
30 ±0.1
Active Face
40 –0.25
0
Supplied with two mounting screws (M5 × 10).
Terminal Plug
HS9Z-H3TP
36.75
±0.5
M12×1
ø14.5
Y-branch Connector
HS9Z-H3YD
42.5
46
ø14.6
M12×1
M12×1
097627
(45°
)
15.1
35.1
20.5
Plug Socket
OverviewXW Series E-StopsInterlock SwitchesEnabling SwitchesSafety Control RelaysLight CurtainsAS-Interface Safety at Work
HS3A Non-Contact Safety Switches
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Specications
Plug Connection Cable
Non-contact Interlock Switch HS9Z-H3FB HS9Z-H3FS
1
2
3
4
85
6
7
8
2
7
6
1
3
4
5
8
2
7
6
1
3
4
5
UB
0V
IA
IB
OA
OB
OUT
RST
Coding Pin
6
5
4
3
2
1
87
Pin Wire Legend Description
1 White IB Enabling input (channel 2)
2 Brown UB Power supply (24V DC)
3 Green OA Safety output (channel 1)
4 Yellow OB Safety output (channel 2)
5 Gray OUT Monitoring output
6 Pink IA Enabling input (channel 1)
7 Blue 0V 0V
8 Red RST Reset input for hardware
Pin Wire Legend
1 Brown UB
2 White OA
3 Blue 0V
4 Black 0B
5 Gray RST
Wiring Diagram
When using a single HS3A
When using a single HS3A, connect as shown in the gure below (Note). The OUT output can
be connected to a control system, to a PLC for example, as a monitoring output.
The HS3A can be reset via the RST input. To reset, apply 24V DC for at least 3 seconds. When
not using the RST input, connect the RST input to 0V.
K2
2b
K2
K1
S34
S33
Control
Circuit
Off Check
Relay
ON
Sub
b
a
a
1
S12S22S21S11
0V
24V DC
A2
A1
K1
13
14 24
23 33
34 42
41
K1
K2
To PLC
(white)
(brown)
(green)
(yellow)
(gray)
(pink)
(blue)
(red)
HS3A #1
IB1
UB2
OA3
OB4
M12 Plug Connection Cable
(8-pin)
OUT5
IA6
0V7
RST8
For details of HR2S-301P safety relay module, see the instruction sheet.
ESC
S1
K4
K3
F
ESC: External Start Condition
F: Fuse
S1: Start Switch
K3, K4: Safety Contactor
K3
K4
External Output
Circuit
In the following diagram, HR2S-301P safety relay module is connected to the
HS3A. RST input of HS3A is not used.
AUTO: Short
MANU: Open
Note: Safety performance of the actual system is determined by performing a risk assessment on the entire
system. Depending on the risk level the system may entail, K1 and K2 need to be monitored to prevent
serious accidents.
Safety Output Response Time
t0toff=t0+ 260 ms
toff=t0+ 150 ms
toff=t0+ 300 ms
Short-circuit or cross-circuit
at OA/OB, or internal fault
Missing signal IA/IB
Actuator removed
(Note)
Failur
e
Non-identical input at IA/IB
t (ms)
: Safety output ON
toff : Output OFF time
t0: Error/actuator removed
Note: The time required for the safety output to turn off after the actuator moves outside the
operating distance of the HS3A switch.
379
800-262-IDEC (4332) • USA & Canada
HS3A
Non-Contact Safety Switches
Overview XW Series E-Stops Interlock Switches Enabling Switches Safety Control Relays Light Curtains AS-Interface Safety at Work
1705151128
When using two or more HS3A in series
A maximum of 20 can be connected in series.
Pay attention to the contact resistance at the connection points.
The HS3A switches can be connected in series using plug connection cables and Y-branch
connectors as shown in the gure below (Note). When any of the HS3A switches detects that
the safety guard is open, or when a failure has occurred on any of the switches, the system
tuns off the machine. However, the external control system cannot detect which safety guard is
open or where a failure has occurred.
The HS3A can be reset via the RST input. To reset, apply 24V DC for at least 3 seconds. When
not using the RST input, connect the RST input to 0V.
Safety Output Response Time
Note: The time
required for the
safety output
to turn off after
the actuator
moves outside
the operating
distance of the
HS3A switch.
t0toff=t0+ 360 ms
toff=t0+ 250 ms
toff=t0+ 400 ms
Short-circuit or cross-circuit
at OA/OB, or internal fault
Missing signal IA/IB
Actuator removed
(Note)
Failur
e
Non-identical input at IA/IB
t (ms)
: Safety output ON
toff : Output OFF time
t0: Error/actuator removed
0V
24V DC
1
2
3
4
5
1
HS3A #n
IB1
2
UB2
3
OA3
4
OB4
Y-branch Connector
M12 Plug Connection Cable
(8-pin)
M12 Plug Connection Cable
(8-pin)
M12 Plug Connection Cable
(8-pin)
5
OUT5
6
IA6
7
0V7
8
RST8
1
2
3
4
5
1
2
3
4
5
1
HS3A #n-1
IB1
2
UB2
3
OA3
4
OB4
Y-branch Connector
5
OUT5
6
IA6
7
0V7
8
RST8
1
2
3
4
5
1
2
3
4
5
1
HS3A #1
IB1
2
UB2
3
OA3
4
OB4
Y-branch Connector
5
OUT5
6
IA6
7
0V7
8
RST8
1
2
3
4
5
1
2
3
4
5
Connector
(Male)
Connector
(Female)
Connector
(Male)
Connector
(Female)
Connector
(Male)
Connector
(Female)
Connector
(Male)
Terminal Plug
K2
2b
K2
K1
S34
AUTO: Short
MANU: Open
S33
Control
Circuit
Off Check
Relay
ON
Sub
b
a
a
1
S12S22S21S11
A2
A1
K1
13
14 24
23 33
34 42
41
K1
K2
(brown)
(white)
(blue)
(black)
(gray)
ESC
S1
K4
K3
F
K3
K4
For details of HR2S-301P safety relay module,
see the instruction sheet.
In the following diagram, HR2S-301P safety relay module is connected to the HS3A.
RST input of HS3A is not used.
External Output
Circuit
ESC: External Start Condition
F: Fuse
S1: Start Switch
K3, K4: Safety Contactor
Note: Safety performance of the actual system is determined by performing
a risk assessment on the entire system. Depending on the risk level the
system may entail, K1 and K2 need to be monitored to prevent serious
accidents.
Operation Distance and Response Time
When installing the HS3A, ensure the safety of the door opening area by paying attention to the operation distance (Table 1) and response time (Table 2)
shown below.
Table 1: Operation Distance 1
Distance Value (mm)
Min. Typ. Max.
Turn-on distance — 15 2—
Assured turn-on distance Sa0 13 — —
Switching hysteresis 1.5 2.5 —
Assured turn-off distance Sar — — 58
1. When the off-center displacement of the interlock switch (sensor head) and actuator
is 0 mm.
2. When surface-mounted on aluminum. When using by embedding in metal,
pay attention to the operation distance affected by the metal. In non-metallic
environment, the typical turn-on distance increases to 30mm.
Table 2: Response Time
Response Time
When connecting
a single switch
(max.)
260 ms (actuator removed)
150 ms (missing enabling input IA/IB)
150 ms (non-identical enabling input state at IA/IB)
300 ms (short-circuit or cross-circuit at OA/OB, or internal fault)
When connecting
two or more
switches (max.)
360 ms (actuator removed)
250 ms (missing signal enabling input IA/IB)
400 ms (non-identical enabling input state at IA/IB)
400 ms (short-circuit or cross circuit at OA/OB or internal fault)
Note: To ensure safety, both safety outputs (OA and OB) must always be evaluated. Single-
channel use of the safety outputs as shown below leads to a reduction of safety category
stipulated in EN954-1.
