Solid-state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide
variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy
themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
available from your local Rockwell Automation sales office or online at
) describes some important differences between solid-state
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property
damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous
voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may
reach dangerous temperatures.
Identifies information that is critical for successful application and understanding of the product.
It is recommended that you save this user manual for future use.
Rockwell Automation Publication 440C-QS001A-EN-P — January 2014
Safety systems are often described as a safety function that consists of inputs
devices, a logic device and output devices. In this example application, we have
two safety input devices: a SensaGuard interlock that monitors a safety gate and
an e-stop push button that is located in a readily accessible area. Our logic
device is a Guardmaster 440C-CR30 software configurable safety relay. We have
two safety rated output devices, both of which are 700HPS-2Z24 relays with
positive opening contacts. The Guardmaster 440C-CR30 monitors the 700HPS
output devices through the plug-in module. Opening the gate or pressing the
e-stop causes the 700HPS relays to turn off, which disconnects the power to the
hazards before the operator can reach the hazard.
Our next consideration is returning power to the machine. In our example
application, the operator opens the gate and walks into the hazard area. In such
cases, a manual reset of the safety system is required. The reset signal is not a
safety signal and therefore can be provided by a graphical display.
Assumptions
1. The user has loaded CCW Version 6.0 (or later) onto their computer.
2.The user has setup an Ethernet connection to the PanelView.
Schematic/Setup
The schematic of our example safety system is shown below.
a. A PanelView C600 has a serial connection to the Guardmaster 440C-
CR30.
b. The PC has a USB connection to the Guardmaster 440C-CR30 and an
Ethernet connection to the PanelView C600.
c. An e-stop is connected to Inputs 00 and 01 and the e-stop uses test
pulses A and B from terminals 12 and 13.
d. A Trojan T15 GD2 tongue interlock monitors a safety gate. It also uses
test pulses A and B from terminals 12 and 13.
e. Two 700HPS relays are connected to output terminals 18 and 19.
f. The normally closed outputs of the 700HPS are connected to terminals
I-00 and I-01 of the Plug-in Module.
g. The reset signal is provided by the PanelView C600.
Rockwell Automation Publication 440C-QS001A-EN-P — January 20141