Rockwell Automation 1791DS-IBxxxx Guard I/O DeviceNet Safety Modules - Manual (Page 38)

38 Rockwell Automation Publication 1791DS-UM001J-EN-P - May 2013
Chapter 2 Understand the Operation of Safety Functions
Controlling Devices See this table for information about controlling devices.
Safety Precautions
ATTENTION: Use appropriate devices as indicated in the Controlling
Device Requirements table. Serious injury may occur due to loss of
safety functions.
Table 2 - Controlling Device Requirements
Device Requirement Allen-Bradley Bulletin Safety Components
Emergency stop switches Use approved devices with direct opening mechanisms complying with IEC/EN
60947-5-1. Bulletin 800F, 800T
Door interlocking switches,
limit switches Use approved devices with direct opening mechanisms complying with IEC/EN
60947-5-1 and capable of switching microloads of 24V DC, 3 mA. Bulletin 440K, 440G, 440H for interlock switch
Bulletin 440P, 802T for limit switch
Safety sensors Use approved devices complying with the relevant product standards,
regulations, and rules in the country where used. Guardmaster products, refer to specific product publications for
details
Relays with forcibly- guided
contacts,
contactors Use approved devices with forcibly-guided contacts complying with EN 50205. For
feedback purposes, use devices with contacts capable of switching micro loads of
24V DC, 3 mA. Bulletin 700S, 100S
Other devices Evaluate whether devices used are appropriate to satisfy the requirements of
safety category levels. -
ATTENTION: As serious injury may occur due to loss of required safety
function, follow these safety precautions.
• Do not use test outputs of the modules as safety outputs.
• Do not use DeviceNet standard I/O data or explicit message data as
safety data.
• Do not use LED status indicators on the I/O modules for safety
operations.
• Do not connect loads beyond the rated value to the safety outputs.
• Wire the Guard I/O modules properly so that 24V DC line does not touch
the safety outputs accidentally or unintentionally.
• Clear previous configuration data before connecting devices to the
network.
• Set unique DeviceNet node addresses before connecting devices to the
network.
• Perform testing to confirm that all of the device configuration data and
operation is correct before starting system operation.
• When replacing a device, configure the replacement device suitably and
confirm that it operates correctly.
• When installing or replacing modules, clear any previous configuration
before connecting input or output power to the device.