Banner SC26-2 Instruction Manual

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Banner SC26-2 Instruction Manual Manual pdf 98 page image

2. Whenever any maintenance or modification is performed on the System or on the machine being guarded by theSystem, to ensure continued proper Controller function (see Schedule of Required Checkouts on page 97)For the initial part of the commissioning checkout, the Controller and associated safety systems must bechecked without power being available to the guarded machine. Final interface connections to the guarded machinecannot take place until these systems have been checked out.Verify that:• The Safety Output leads are isolated—not shorted together, and not shorted to power or ground• If used, the external device monitoring (EDM) connections have been connected to +24 V dc via the N.C.monitoring contacts of the device(s) connected to the safety outputs, as described in External Device Monitoring(EDM) on page 90 and the wiring diagrams• The proper Controller configuration file for your application has been installed into the Safety Controller• All connections have been made according to the appropriate sections and comply with NEC and local wiringcodesThis procedure allows the Controller and the associated safety systems to be checked out, by themselves, beforepermanent connections are made to the guarded machine.7.2.2 Initial Setup, Commissioning and Periodic Checkout ProceduresThere are 2 ways to verify that the Safety Outputs are changing state at the appropriate times in the initial configurationcheck out phase (open Configuration Summary in the PC Interface to view the Start-up test and Power-up configurationsettings):• Start the Live Mode in the PC Interface (the Controller must be powered up and plugged in to the PC via the SC-USB2 cable).• Use a voltmeter or a 24 V dc light to verify the presence (or the absence) of the 24 V dc signal on the outputterminals.Start-Up ConfigurationOutputs associated with Two-Hand Control, Bypass or Enabling Device functions do not turn on at power-up. After power-up, switch these devices to the Stop state and back to the Run state for their associated outputs turn On.If configured for Normal Power-UpIf latch function is not used: verify that Safety Outputs turn on after power-up.If either input devices or outputs use the latch function: verify that Safety Outputs do not turn on after the power-up until the specific manual latch reset operations are performed.If configured for Automatic Power-UpVerify that all Safety Outputs turn On within 5 seconds (outputs with On-Delay enabled may take longer to turnOn).If configured for Manual Power-UpVerify that all Safety Outputs remain Off after power up.Wait at least 10 seconds after power-up and perform the Manual Power-Up reset.Verify that the Safety Outputs turn On (outputs with On-Delay enabled may take longer to turn On).CAUTION: Verifying Input and Output FunctionThe Qualified Person is responsible to cycle the input devices (Run state and Stop state) to verify thatthe Safety Outputs turn On and Off to perform the intended safeguarding functions under normaloperating conditions and foreseeable fault conditions. Carefully evaluate and test each Safety Controllerconfiguration to make sure that the loss of power to any safeguarding input device, the SafetyController, or the inverted input signal from a safeguarding input device, do not cause an unintendedSafety Output On condition, mute condition, or bypass condition.NOTE: If an Input or Output indicator is flashing Red, see Troubleshooting on page 105.Safety Input Device Operation (E-Stop, Rope Pull, Optical Sensor, Safety Mat, Protective Stop)1. While the associated Safety Outputs are On, actuate each safety input device, one at a time.2. Verify that each associated Safety Output turns Off with the proper Off-Delay, where applicable.3. With the safety device in the Run state:• If a safety input device is configured with a Latch Reset function,1. Verify that the Safety Output remains Off.2. Perform a latch reset to turn the outputs On.3. Verify that each associated Safety Output turns On.XS/SC26-2 Safety Controller98