Omron SCC-1224 User manual

Safety Edge Controllers
SCC-1224 & SCC-1224ND
Installation and Operating Manual
Original Instructions

2 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
SCC-1224 & SCC-1224ND
Safety Edge Controllers
Table of Contents
1 --Important Safety Message. . . . . . . . . . . . . . . . . . . . . . . . . . page 3
2 --Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6
3 --Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
4 --Description of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
5 --Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
6 --Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14
7 --Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16
8 --Warranty & Additional Information . . . . . . . . . . . . . . . . . . page 20
Appendix A --- Declaration of Conformity Information . . . . . page 22

IMPORTANT SAFETY MESSAGE
3 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
1 I MPORTANT S AFETY M ESSAGE
The Safety Edge and Controller, when used together as a system, is an
emergency stop device when applied, installed, operated, and
maintained in accordance with the instructions in this manual. The
design and construction of this device is in accordance with CEN -
European Committee for Standardization for CEN member countries.
This organization provides general information and guidelines on the
proper methods for manufacturing this type of a device as it relates to
machine safeguarding.
Whether a specific machine or other application and Safety Edge and
Controller installation fully comply with ISO 13849-1 depends on
several items including: the proper application, installation,
maintenance and operation of the Safety Edge and Controller. These
items are the sole responsibility of the purchaser, installer and
employer.
The employer is also responsible for the selection and training of the
personnel necessary to properly install, operate and maintain the
machine and its safety systems. For example, Safety Edge and
Controller should be installed, checked out and maintained only by a
qualified person.
The user is that person(s) identified and designated by the employer as
being appropriately trained and qualified to perform a specific
procedure. Often the user is the installer, die setter, electrician,
maintenance personnel, supervisor, or foreman, etc., involved with the
setup, test and checkout of the machine and all safety devices.

IMPORTANT SAFETY MESSAGE
4 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
Definition of Qualified Person
A person who, by possession of a recognized degree in an applicable field
or a certificate of professional standing, or who by extensive knowledge,
training, and experience, has successfully demonstrated the ability to
solve or resolve problems relating to the subject matter and work.
Reference ASME B30.2-2001
The equipment operator must receive specific, proper training on exactly
which equipment is protected by the Safety Edge and Controller, the
equipment’s operating controls, warning signs and safety instructions. The
equipment operator must thoroughly understand and follow the company’s
safety rules and always use the safeguards and proper hand tools provided
by the employer. The equipment operator must notify management if the
equipment, tooling or safety devices are not operating properly. Never use
the equipment if it or the related safety equipment is not in proper working
order.
The following additional requirements must be met before using the Safety
Edge Controller E-stop system.
• The equipment on which the Safety Edge and Controller are installed must
be capable of stopping motion anywhere in its stroke or cycle.
• Do not use a Safety Edge and Controller:
— on any device with inconsistent stopping time or inadequate control
devices or mechanisms.
— where the environment, such as corrosive chemicals, may degrade the
efficiency of the Safety Edge and Controller.
• When a Safety Edge and Controller are installed on a machine or other
piece of equipment as an emergency stop device, the employer has the
responsibility to insure that all applicable federal, state and local Occupational
Safety and Health Act (OSHA) requirements and other such rules, codes and
regulations are satisfied.
• All safety-related machine control circuit elements, including
pneumatic, electric or hydraulic controls, must be control reliable as
defined by ANSI B11.19-2003, 3.14. All other machinery or equipment
must meet OSHA Standard 1910.212 on general machine guarding plus
any other applicable regulations, codes and standards.

IMPORTANT SAFETY MESSAGE
5 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
Do not use Safety Edge and Controller to initiate machine or
equipment motion.
• All brakes and other stopping mechanisms must be inspected
regularly to ensure proper working order. If the stop mechanisms and
associated controls are not working properly, the machine may not stop
safely even though the Safety Edge and Controller are functioning
properly.
• Only qualified personnel must install and test the Safety Edge and
Controller. Do not perform any test or repairs other than those outlined in
this manual. All electrical wiring must be installed in accordance with
local electrical codes and regulations.
• The user must follow all procedures in this manual for proper
operation of the Safety Edge and Controller.
The enforcement of these requirements is beyond Omron STI’s
control. The employer has the sole responsibility to follow the
preceding requirements and any procedures, conditions and
requirements specific to your machinery.

INTRODUCTION
2 I NTRODU CT ION
The Omron STI Safety Edge and Safety Edge Controller, when connected
together, provide the operator controls and switching electronics for an
emergency stop system that can cover large areas of a machine, door, gate,
etc. Applications include machinery, gates, fences, overhead and sliding
doors and other equipment where easy operator access to an emergency
stop actuator is needed.
Safety Edges are watertight and are impervious to a large number of
chemicals. They available in several profiles in lengths up to 6100mm in
10mm increments.
Six wiring configurations are available in all profiles.
1. “0” – configuration has no terminating resistor. This would be used as
the first segment where additional segments are connected in series.
2. “1” – configuration includes the resistor, which is wired external to the
Safety Edge. This allows for additional strips to be installed in the future if
required.
3. “2” – configuration includes the resistor enclosed and sealed within the
strip. This unit must always be the last or the only unit in the system the
resistor cannot be removed without compromising the integrity of the
system.
4. “3” – QD configuration has no terminating resistor. This would be used
as the first segment where additional segments are connected in series. One
two wire lead exits each end of the profile one is fitted with a Female
Quick-disconnect and the other is fitted with a Male Quick-disconnect.
5. “4” – QD Configuration consist of one two wire lead with Male Quick-
disconnect and one resistor enclosed and sealed within the strip. This unit
must always be the last or the only unit in the system the resistor cannot be
removed without compromising the integrity of the system.
6. “5” – QD This configuration has no terminating resistor. This would be
used as the first segment where additional segments are connected in
series. One two wire lead exits each end of the profile, one end has a two
wire connection and the other is fitted with a Female Quick-disconnect.
6Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions

THEORY OF OPERATION
Safety Outputs (OSSD’s)
7 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
3 T HEORY OF O PERATION
The Safety Edge Controller and Safety Edge combine to make up a
versatile and flexible emergency stop system for use in applications
where a machine operator or setup person must have easy, contiguous
access to an E-Stop actuator.
The Safety Edge is consists of an aluminum mounting rail, a Safety
Contact and a rubber profile into which the Safety Contact is inserted.
The SGE Series Edges have an integrated contact within the profile.
The Safety Edge has two wires connected at each end. In an
application where a single strip is used, two wires from one end are
connected to the Safety Edge Controller, the two wires on the other
end of the Safety Edge are factory connected to an 8.2 K Ohm resistor.
4 D ESCRIPTION OF C ONTROL
4.1.SAFETY OUTPUTS (OSSD’S)
The positive-guided relay outputs of the SCC-1224 and SCC-1224ND
are referred to as safety outputs. They are turned off when an object or
person activates the Safety Edge. Two Normally Open contacts are
provided across terminals 13, 14 and 23, 24.
4.2.AUXILIARY OUTPUT SCC-1224
One Normally Open contact is provided across terminals 31, 32. This
contact closes for 1 to 3 seconds whenever the Safety Edge is
activated. These contacts must never be used in the safety circuit.
4.3.A UXILIARY O UTPUT SCC-1224ND
One Normally Open contact provided across terminals 31, 32. This
contact remains closed as long as the safety contacts are open. (When
the Safety Edge is activated). These contacts must never be used in the
safety circuit.

DESCRIPTION OF CONTROL
Indicators
8 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
4.4.INDICATORS
There are four LED lamps on the SCC-1224 and SCC-1224ND Safety
Edge Controller. Please see Figure 5-2 for the physical location of each
indicator. These LEDs are identified on the controller.
• Green LED Power
Indicates that main power has been applied to the controller. Upon removal
of power, the green light will go out and the controller and Safety Edge
becomes inactive and the safety contacts are opened.
• Yellow LED Actuate (Edge Activated)
Indicates that the Safety Edge is depressed. LED goes out upon removal of
pressure from the Safety Edge.
• Red LED Fault Indication
Indicates an open circuit in the Safety Edge such as a broken/cut wire, a
loose connection on terminals X1 and/or X2 on the controller terminal
block, a missing or incorrect value of the terminating resistor at the end of
the Safety Edge, or any damage to the Safety Edge that could cause an
open circuit between terminals X1 and X2.
• Yellow LED Auxiliary Output SCC-1224 (Delay to Open)
Indicates that the safety contact has been activated, causing the auxiliary
contact to close. These contacts close when the safety contact is activated
and are timed to open after about one to three (1 to 3) seconds. This could
be used to reverse a door so long as doing so does not present a hazard.
• Yellow LED Auxiliary Output SCC-1224ND (No Delay to Open)
Indicates that the safety contact has been activated, causing the auxiliary
contact to close. These contacts remain closed as long as the safety Edge is
activated.

MODES OF OPERATION
Automatic Start Mode (Factory Default)
9 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
5 M ODES OF O PERATION
5.1.AUTOMATIC START MODE (FACTORY
DEFAULT)
There is only one configurable option, the factory default for the unit
is Automatic Start, (See Figure 5-1) when power is applied to the
controller, the controller will initiate a start up self-check. When the
self-check is complete the relays will close; pressing the Safety Edge
will cause the safety relays in the controller to transfer to the open
state. When pressure is removed from the Safety Edge, the relays will
transfer back to the closed state.
Table 5-1 Wiring Connections
X1, X2 Safety Edges input
S11, S12 Jumper removed for Automatic Start
B1, B2 Supply Voltage 24VAC/DC
Z1, Z2 Reset Pushbutton or Momentary Key-switch.
No connection required for automatic start.
A1, A2 Supply Voltage 115 VAC 50/60 Hz
31, 32 Auxiliary Output
- SCC-1224: Contacts close when Safety
Edge is operated and Delayed To Open after 1
to 3 seconds.
- SCC-1224ND: Contacts close when Safety
Edge is operated and remain closed until the
Safety Edge is returned to normal.
These contacts must never be used in the safety
circuit.
13, 14 Safety Output 1
23, 24 Safety Output 2
for Automatic Start

(No Connection for Auto Start)
Jumper for Start/Restart Interlock Mode
Reset Pushbutton or Keyswitch
(No Connection for Auto Start)
Factory Installed Jumper
Supply Voltage
115 VAC 50/60 HZ
Safety Output 2
Safety Output 1
Auxiliary Output
(MUST NOT
be used in the Safety Circuit)
Supply Voltage 24 VAC/DC Safety Edge Input
S12
X2
32
24
Z2
X1B2
Z1
B1
Power
Fault
Actuate
31A2
2314
A1
13
Aux. Output
S11 X2
X1
S11
S12
B2
B1
Z2
Z1
24
23
32
31
14
13
A1
A2
SCC-1224
MODES OF OPERATION
Automatic Start Mode (Factory Default)
10 Safety Edge Controllers Manual 99640-0010 Rev.P
Original Instructions
Figure 5-1 Automatic Start Connection Diagram