90
P/N 133487
Banner Engineering Corp.
•
Minneapolis, U .S .A .
www .bannerengineering .com • Tel: 763 .544 .3164
SC22-3 Safety Controller
Instruction Manual
Appendix A
A.8.1 Rope/Cable Pull Installation Guidelines
• The wire rope should be easily accessible and visible along
its entire length . Markers or flags may be fixed on the rope to
increase its visibility .
• Mounting points, including support points, must be rigid .
• The rope should be free of friction at all supports . Pulleys
are recommended .
• Use pulleys when routing the rope around a corner, or
whenever direction is changed, even slightly .
• Never run rope through conduit or other tubing .
• Never attach weights to the rope .
• Temperature affects rope tension . The rope expands
(lengthens) when temperature increases, and contracts
(shrinks) when temperature decreases . Significant
temperature variations require frequent checks of the tension
adjustment .
• Do not exceed the manufacturer’s recommended maximum
rope length .
• Mount the switch securely on a solid, stationary surface .
• The anchor point for rope must be solid and stationary, and
be able to withstand the constant tension of the rope .
• Each rope pull emergency stop installation should be tested
and inspected for proper operation at suitable intervals as
determined by the user’s risk assessment, based upon
severity of the operating environment and the frequency of
switch actuations .
• Pulleys and other moving parts associated with the rope
should be periodically lubricated .
A.8.2 SC22-3 Rope Pull Hookup Options
The device is shown in the armed or Run state .
Single-Channel (1 terminal, 2 terminals, or PNP device):
These circuits can typically meet ISO 13849-1 Category 2
requirements, depending on the design and installation of the
switch . At a minimum, to achieve a Category 2, the switch must
be a safety-rated device . The 1-terminal and the PNP device
can not detect a short circuit to another source of power . Two-
terminal hookup uses pulse monitoring and can detect a short
circuit to another source of power . Fault Exclusion must be used
to achieve higher level of safety circuit integrity .
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
Dual-Channel (2 terminals or 3 terminals): This circuit typically
can meet ISO 13849-1 Category 3 requirements, depending on
the safety rating and installation of the output device(s) . Dual-
channel 3-terminal hookup uses pulse monitoring and can detect
a short circuit to another source of power . Both 2- and 3-terminal
hook up can detect a short between channels when the contacts
are open if the short is present longer than 2 seconds .
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
Dual-Channel (PNP device): This circuit can meet ISO 13849-1
Category 2, 3, or 4 requirements, depending on the safety rating,
installation, and the fault detection (e .g ., short circuit) capabilities
of the output device . The SC22-3 does not provide short circuit
detection in this configuration .
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
Dual-Channel (4 terminals): This circuit can meet ISO 13849-1
Category 4 requirements, depending on the safety rating and the
installation of the output device . This circuit can detect a short
circuit between channels or to another source of power .
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
Complementary (2 terminals or 3 terminals): This circuit can
meet ISO 13849-1 category 2, 3, or 4 requirements depending
on the safety rating and the installation of the output device .
This circuit can detect a short circuit between channels . In the
actuated condition (e .g ., S1 closed/S2 open below) a short
across the closed contact can cause the response time to
increase based on the debounce time . In this situation, the
response time could be longer than specified, based on the
(selected) debounce time, see Section 3 .2 .2 .
S1
S2
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
2-Ch, 2 Terminal
PNP
24V
Rope Pull - Single Channel
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Rope Pull - Dual Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
Rope Pull - Dual Channel Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary,
2 Terminals, PNP
24V
Revision History
1-Aug-2007 Protective Stop was removed from this document and is with the Optical Sensor document
ON
ON
OFF
ON
S1 S2