IM_ONE_Safety-07
www.ueonline.com
15
SETTING THE SRO FAULT MONITOR
The SRO fault monitor senses the output of the relay and verifies that it is in the correct state. If the relay is closed when it should be open or open
when it should be closed this feature will turn off IAW, set the output current to < 3.6 mA attempt to turn off the SRO and SRO Status outputs. A
relay fault message will be displayed. This feature requires a connection to +VDC, -VDC or neutral (L2) from the load’s power supply. See wiring
connections for TB2 on page 8.
NOTE:
The SRO fault monitor default is set to “OFF” from the factory and must be enabled by the user. Refer to the Programming Flowchart on page 19.
• Enter the Programming Mode and move through the program until SRO FAULT MON is scrolling on the display. Press the right
g
button.
• If OFF is displayed, press the left
2
button to set fault monitoring to ON
• Press the right
g
button to activate SRO fault monitoring.
Setting the Filter
In some applications, it is desirable to “dampen” the Safety Relay Output response and prevent intermittent false trips due to pressure
spikes or other transient/isolated events. The Filter feature provides a software digital filter with a configuration time constant for sup-
pressing certain transient short-duration events.
Refer to the Programming Flowchart on page 19.
• Enter the Programming Mode (see page 10) and move through the commands until FILTER is scrolling on the display. Press the
right
g
button.
• The available selections are as follows
Pressure Models:
OFF (Default)
Temperature Models:
1/2 second
1/4 second
1 second
1/2 second
2 seconds
1 second
2 seconds
• Using the left
2
button, select a time constant.
• Press the right
g
button to enter the time constant and return to main menu.
NOTE:
The One Series typically responds to a process value change in less that 100 milliseconds when the Filter is set to off. Using this
feature can lengthen the overall response time of the One Series for certain types of process value changes (pressure spikes).
• A shorter delay setting provides a faster response but is less stable.
• A longer delay setting provides a slower response and is more stable.
