Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Sensors > Light Curtains / Safety Components > Safety Light Curtain Type 2 SF2B Ver.2(Discontinued Products) > Cautions For Use
We are sorry, the products have been discontinued. Please refer to the details of the discontinued products and the recommended substitutes list below.
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・ | This catalog is a guide to select a suitable product. Be sure to read instruction manual prior to its use. |
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・ | Both emitter and receiver are adjusted before shipment, please apply both emitter and receiver with the same serial No. The serial No. is indicated on the plates of both emitter and receiver. (Indicated under the model No.) |
・ | Emission halt by test input (Emission halt function) |
・ | Beam interrupting by test rod (Excluding the cable SF2B-CB05-A) |
Test input | Emission status | |
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When using the |
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Open | Emission halt | Emission |
Connected to 0 V or +V | Emission | Emission halt |
<Time chart>
Bottom cap cable | Normal mode | Lockout | ||
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Emission halt | Control outputs (OSSD 1, OSSD 2) status |
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Beam received | Beam interrupted | |||
When using the SF2B-CCB□ / SF2B-CB□ |
ON | OFF | ON | ON |
When using the SF2B-CB05-A |
OFF | ON | ON | OFF |
SF2B-CB05-B | Cannot be used. |
When bottom cap cable SF2B-CCB□ or SF2B-CB□ (optional) is used |
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When bottom cap cable SF2B-CB05-A (optional) is used |
・ | When an abnormality which needs emission halt status occurs [for example, the control output (OSSD 1) short-circuit and an error occurs.] |
・ | While test input has been input |
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When bottom cap cable SF2B-CB05-B (optional) is used |
In case of setting the external device monitoring function to enabled |
In case of not using the external device monitoring function |
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Connectable up to 3 sets of safety light curtains (however, 128 beam channels max.) (Note 1, 2) |
Notes:
1): | Series connection connectors cannot be used with the SF2B-H8-□ and SF2B-A4-□, and so series connection is not possible. The SF2B-H8SL and SF2B-A4SL are not equipped with series connection connectors, so when connecting three sets in series, they cannot be used in the middle position. | ||
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2): | The total number of beam axes for the SF2B-A□ is a maximum of 96 when two sets are connected, and 64 when three sets are connected. When SF2B-H□ and SF2B-A□ are combined in series connection, double the number of the beam channels of SF2B-A□ to calculate the total number of beam channels, which should be 128 or less.
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Notes:
1) | The threshold value where the control output changes from OFF to ON is applied as “100 % incident light intensity”. |
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2) | The status “when light is interrupted” refers to the status that the some obstacle is existed in the sensing area. |
3) | For details, refer to “Troubleshooting” and the SF2B instruction manual. |
4) | The description given in [ ] is marked on the safety light curtain. |
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For use based on EN ISO 13855 / ISO 13855 / JIS B 9715 |
For intrusion direction perpendicular to the sensing area
S: | Safety distance (mm) Minimum required distance between the sensing area surface and the dangerous parts of the machine |
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K: | Intrusion speed of operator’s body or objects (mm/sec.) Normally, taken as SF2B-H□ 2,000 (mm/sec.), SF2B-A□ 1,600 (mm/sec.) for calculation. |
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T: | Response time of total equipment (sec.) T = Tm + TSF2B Tm: Maximum halting time of machinery (sec.) TSF2B: Response time of the SF2B series 0.015 (sec.) |
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C: | Additional distance calculated from the size of the minimum sensing object of the safety light curtain (mm) However, the value of “C” cannot be 0 or less. C = 8 × (d – 14)
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・ | For calculating the safety distance “S”, there are the following five cases. First calculate by substituting the value K = 2,000 (mm/sec.) in the equation above. Then, classify the obtained value of “S” into three cases, 1) S < 100, 2) 100 ≤ S ≤ 500, and 3) S > 500. For Case 3) S > 500, recalculate by substituting the value K = 1,600 (mm/sec.). After that, classify the calculation result into two cases, 4) S ≤ 500 and 5) S > 500. For details, refer to the instruction manual enclosed with this product. |
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For use based on ANSI B11.19 |
S: | Safety distance (mm) Minimum required distance between the sensing area surface and the dangerous parts of the machine |
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K: | Intrusion velocity {Recommended value in OSHA is 63 (inch/sec.) ≈ 1,600 (mm/sec.)} ANSI B11.19 does not define the intrusion velocity “K”. When determining K, consider possible factors including physical ability of operators. |
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Ts: | Halting time calculated from the operation time of the control element (air valve, etc.) (sec.) | ||
Tc: | Maximum response time of the control circuit required for functioning the brake (sec.) | ||
TSF2B: | Response time of safety light curtain 0.015 (sec.) | ||
Tbm: | Additional halting time tolerance for the brake monitor (sec.) Tbm = Ta – (Ts + Tc)
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Dpf: | Additional distance calculated from the size of the minimum sensing object of the safety light curtain SF2B-H□ Dpf = 2.676 (inch) ≈ 68 (mm) SF2B-A□ Dpf = 5.355 (inch) ≈ 136 (mm) Dpf = 3.4 × (d – 0.276) (inch) Dpf ≈ 3.4 × (d – 7) (mm) d: Minimum sensing object diameter 1.063 (inch) ≈ 27 (mm) SF2B-H□ Minimum sensing object diameter 1.851 (inch) ≈ 47 (mm) SF2B-A□ |
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Notes:
1) | If using the SF2B-CB05-B, the operating range is 0.3 to 5 m 0.984 to 16.404 ft. |
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2) | The effective aperture angle for this device is ±5°or less (when L > 3 m 9.843 ft) as required by IEC 61496-2 / UL 61496-2. However, install this device away from reflective surfaces considering an effective aperture angle of ±6° to take care of beam misalignment, etc. during installation. |
Emitter side |
Phenomenon | Cause | Remedy |
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All indicators are off. | Power is not being supplied. | Check that the power supply capacity is sufficient. Connect the power supply correctly. |
Supply voltage is out of the specified range. | Provide the supply voltage within the specified range. | |
Connector is not connected securely. | Connect the connector securely. | |
Operation indicator remains lit up in red (beam is not received). [OPERATION] |
The beam channels of the emitter and the receiver are not correctly aligned. | Align the beam channels. |
Emission halt indicator (orange) lights up. [HALT] |
Emission is in halt condition. | Connect the test input (emission halt input) wire correctly. The logic varies depending on the cable to be used. |
The synchronization wire error | Connect the synchronization wire correctly. | |
The receiver does not work. | Check the operation of the receiver side. | |
The interference prevention wire error (When using the SF2B-CB05-B: When set to slave) |
Connect the interference prevention wire correctly. | |
Master / slave setting error (When using the SF2B-CB05-B: When set to master) |
Set the master / slave setting to “master”. | |
The master sensor does not work. | Check the master side safety light curtain. | |
Fault indicator (yellow) lights up or blinks. [FAULT] |
[Blinks once] Total safety light curtains No. / total beam channel No. error |
Connect the end cap properly. Connect the cable for series connection correctly. Check the model (emitter / receiver) of sub-sensor for series connection. Set the No. of the safety light curtains in series connection, and a total No. of beam channels within the specification. |
[Blinks twice] Auxiliary output error |
Connect the auxiliary output cable correctly. | |
[Other than the above] Effect from noise / power supply or failure of internal circuit |
Check the noise status around this safety light curtains. Check the wiring, supplied voltage and power supply capacity. Even if the error is not eliminated, contact our office. |
Receiver side |
Phenomenon | Cause | Remedy |
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All indicators are off. | Power is not being supplied. | Check that the power supply capacity is sufficient. Connect the power supply correctly. |
Supply voltage is output of the specified range. | Set the supply voltage correctly. | |
Connector is not connected securely. | Connect the connector securely. | |
OSSD indicator remains lit up in red (beam is not received). [OSSD] |
The beam channels of the emitter and the receiver are not correctly aligned. | Align the beam channels. |
Total unit No. / total beam channel No. error | Set the same value to the Nos. of emitter and receiver. | |
The master / slave setting is different. (When using with the SF2B-CB05-B) |
Set the setting identically. | |
Stable indicator lights up (Orange) [STB] |
The beam channels of the emitter and the receiver are not correctly aligned. | Align the beam channels. |
Fault indicator (yellow) lights up or blinks. [FAULT] |
[Digital error indicator 1 ] Total safety light curtain No. / total beam channel No. error |
Connect the end cap properly. Connect the cable for series connection correctly. Check the model (emitter / receiver) of sub sensor for series connection. Check that the number of safety light curtains / number of beam axes is within the specification value. |
[Digital error indicator 2 ] Control outputs (OSSD 1, OSSD 2) error |
Connect the control outputs (OSSD1, OSSD2) correctly. | |
[Digital error indicator 4 ] Extraneous light error |
Prevent any extraneous light from entering the receiver. | |
[Digital error indicator 7 ] External device monitoring error |
Connect the external device monitor input wire correctly. Replace the replay unit. Replace the relay unit having appropriate response time. |
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[Digital error indicator 6 ] Bottom connector error |
Check the type of the bottom connector. Cable of the emitter: Gray (with black stripe) |
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[Other than the above] Effect from noise / power supply or failure of internal circuit |
Check the noise status around this safety light curtain. Check the wiring, supplied voltage and power supply capacity. Even if the error is not eliminated, contact our office. |
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