Programmable Safety Controller SCR P
168
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Unidirectional (One Way) Muting Function
1. With the mute sensors not activated, muted safeguarding devices in the Run state and Safety Outputs On:
a) Activate Muting Sensor Pair 1.
b) Change the muted safeguarding device to the Stop state.
c) Activate Muting Sensor Pair 2.
d) Deactivate Muting Sensor Pair 1.
2. Verify the associated Safety Output remains On throughout the process.
3. Repeat the test in the
wrong direction
(Muting Sensor Pair 2, then the safeguarding device, then Muting Sensor
Pair 1).
4. Verify that when the safeguard changes to the Stop state the output turns Off.
If a mute time limit has been configured
Verify that the associated Safety Outputs turn Off when the mute timer expires.
Mute Function with Power-Up Operation (not applicable for Two-Hand Control)
1. Turn the Safety Controller power Off.
2. Activate the Mute Enable input if used.
3. Activate an appropriate Muting Sensor Pair for starting a mute cycle.
4. Make sure that all mutable safeguarding devices are in the Run state.
5. Apply power to the Safety Controller.
6. Verify that the Safety Output turns On and that a mute cycle begins.
7. Repeat this test with the mutable safeguard device in the Stop state.
8. Verify that the Safety Output stays Off.
Mute Function with Mute-Dependent Override
1. Make sure mute sensors are not activated and mute safeguarding devices are in the Run state.
2. Verify that the Safety Outputs are On.
3. Switch the safeguarding device to the Stop state.
4. Verify that the Safety Output turns Off.
5. Activate one of the mute sensors.
6. Verify the optional mute lamp is flashing.
7. Start the mute dependent override by activating the Bypass Switch.
8. Verify that the Safety Output turns On.
9. Verify that the Safety Output turns Off under any of the following conditions:
• Bypass (Override) Time limit expires
• Mute sensors are deactivated
• The Bypass device is deactivated
Mute Function with Bypass
1. Verify that each safety input, that can be both muted and bypassed, is in the Stop state.
2. Verify that when the Bypass Switch is in the Run state:
a) The associated Safety Outputs turn On.
b) The associated Safety Outputs turn Off when the bypass timer expires.
3. Change the Bypass Switch to the Run state and verify that the associated Safety Outputs turn On.
4. Switch the associated non-bypassed input devices to their Stop state (one at a time) and verify that associated
Safety Outputs turn Off while the Bypass Switch is in the Run state.
