P/N 133487
75
Banner Engineering Corp.
•
Minneapolis, U .S .A .
www .bannerengineering .com • Tel: 763 .544 .3164
SC22-3 Safety Controller
Instruction Manual
Appendix A
A.2 Protective (Safety) Stop
A Protective (Safety) Stop is designed for the connection
of miscellaneous devices (not otherwise listed on the
“Add Safety Device” screen) that could include safeguarding
(protective) devices and complementary equipment . This stop
function is a type of interruption of operation that allows an
orderly cessation of motion for safeguarding purposes . The
function can be either automatically or manually activated and
reset either manually or automatically .
A.2.1 Protective (Safety) Stop Requirements
The required safety circuit integrity level is determined by a risk
assessment and will indicate the level of control performance
that is acceptable (e .g ., Category 4, Control Reliability), see
Section A .1 and A .1 .1 . The protective stop circuit must control
the safeguarded hazard by causing a stop of the hazardous
situation(s), and removing power from the machine actuators .
This is typically functional stop category 0 or 1 as described by
ANSI NFPA 79 and IEC60204-1 .
The user must follow the device manufacturer’s installation,
operation, and maintenance instructions and all relevant
regulations. If there is any question about the device(s) that
are to be connected to the SC22-3, call Banner Engineering
at the number on the back cover for assistance.
A.2.2 SC22-3 Protective (Safety) Stop Hookup Options
All figures show the input device in the OFF (Stop) state .
Single-Channel (1 terminal, 2 terminals or PNP device):
These circuits can typically meet ISO 13849-1 Category 2
requirements, depending on the safety rating of the output
device(s) . At a minimum, a safety-rated device must be used
to achieve a Category 2 . The 1-terminal and the PNP device
circuits 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 a higher level of safety circuit integrity .
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
OFF
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 2 or 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 hookup can detect a short
between channels when the contacts are open if the short is
present longer than 2 seconds .
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
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 .
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
Dual-Channel (4 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 or to another source of power .
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
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 open/S2 closed 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
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
Optical Sensors and Protective Stop - Dual Channel
Optical Sensors and Protective Stop - Single Channel
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
24V
2-Ch, 2 Terminals
2 PNP
Muting Sensor Pair - Dual Complementary
Complementary,
2 Terminals
Complementary,
3 Terminals
Complementary PNP
24V
01-Aug-2007 Optical Sensors and Protective Stop Circuit drawings are the same
OFF
OFF
ON
OFF
24V
1-Ch.
1 Terminal
1-Ch.
2 Terminals
1-Ch.
1 Term, PNP
Revision History
Complementary (PNP device): 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 OFF/S2 ON 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 .
Two-Hand Operation
2-Ch, 2 Terminals
2-Ch, 2 Terminals
2-Ch, 3 Terminals
2-Ch, 4 Terminals
2-Ch, 2 Terminals
2 PNP
Two Hand Operation - 2x Dual Channel Complementary
2x Complementary,
4 Terminals
2x Complementary,
5 Terminals
2x Complementary,
4 Terminals, 4 PNP
Revision History
Rev C - Corrected “OFF” and “ON” on Two-hand Operation - 2x Dual Channel Complementary, 2x Complementary, 4 Terminals, 4 PNP
20-Sept-06 Rev. D - Moved 24V, ON and OFF text closer to drawings.
13-Oct-06 Rev. E Gray lines moved below the black lines
21-Nov-06 Rev. F - Added + sign to 2-Ch, 3 Terminals, 2-Ch, 4 Terminals, 2x Dual Channel Complementary, 5 Terminals
10-Jan-07 Rev. G - C sign text to outlines, changed gray lines to 6 pt. dashed lines
25-May-07 Rev H - Changed 2-Ch, 2 Terminals 2 PNP; 2x Complementary, 5 Terminals (centered arrow) and 2x Complementary, 4 Terminals, 4 PNP
20-Sept-07 Rev I - Added another 2-ch, 2 Terminal for the manual
24V
24V
OFF
OFF
ON
OFF
ON
OFF
24V
S1 S2
