What to do if alarm output went OFF and cannot be cleared on Omron Surge Protector after setting overvoltage and undervoltage alarms?
If the S8M was switched to Run Mode after setting the overvoltage alarm and undervoltage alarm, and the alarm output went OFF and cannot be cleared on your Omron Surge Protector, the undervoltage and overvoltage settings may have been reversed. Switch to Setting Mode and check the settings.
Why the displayed temperature on Omron Surge Protector is different from the ambient temperature?
If the displayed temperature on your Omron Surge Protector is noticeably different from the ambient temperature, it's because the S8M detects the Unit's internal temperature, which can be 5 to 10°C higher than the ambient temperature. When using the alarm as a control signal for a fan or cooling equipment, set the alarm value based on the graph in the S8M User’s Manual (Cat. No. Z241).
What to do if Omron Surge Protector display is flashing 'ON' in Test Mode but no power is supplied?
If the Omron Surge Protector display is flashing “ON” in Test Mode, but power isn't being supplied by the outputs, it means the S8M is waiting to turn ON the outputs. Pressing the Mode Key will connect the output and supply power. When power is being supplied, “OFF” will flash on the display.
Why the desired alarm value is not being displayed on Omron Surge Protector?
If the desired alarm value is not being displayed on your Omron Surge Protector, it's likely because the setting is not allowed in the current protection level. To fix this, change the protection level setting.
How to clear run time alarm on Omron Surge Protector?
If the run time alarm went OFF on your Omron Surge Protector, and replacing parts didn't clear it, the S8M continues tracking run time. To clear the alarm, you need to reset the run time to 0.
Why there is no power from the Omron Surge Protector outputs when turned ON again after being turned OFF in Test Mode?
If the Omron Surge Protector was turned OFF in Test Mode, and there's no power from the outputs when it's turned ON again, it's because all branch outputs are cut off for safety reasons when the power is turned OFF in Test Mode. To resolve this, either connect all branch outputs in Test Mode or connect each branch output individually.
Why the Omron Surge Protector connection cannot be reset immediately after it is cut off?
To protect the internal circuits of the Omron Surge Protector, you must wait at least 15 seconds before resetting a cut-off output. If 'RST' is displayed when you press the Reset Key for at least 3 seconds, the cut-off output can be reset once 15 seconds have passed since the output was cut off.
How to save changes on Omron Surge Protector?
If the set value on your Omron Surge Protector was changed, but the change wasn't accepted, it means the new setting wasn't saved. To save the new value, after pressing the Up and Down Keys to change the set value, press the Mode Key and verify that the setting flashes.
What to do if the Omron Surge Protector output is cut off immediately in Test Mode?
If the Omron Surge Protector output is connected in Test Mode, but it's cut off immediately and can't be reconnected, check the status indicator to see if it's lit red. This indicates the current may be higher than the tripping current. Look for output wiring problems. If no problems are found, press the Reset Key for at least 3 seconds.
How to clear alarm display on Omron Surge Protector?
If an alarm was triggered on your Omron Surge Protector and you've fixed the issue that caused it, but the alarm display won't clear, it's because the S8M retains the alarm display even after the problem is resolved. To clear the alarm, press the Reset Key for at least 3 seconds.
General| Brand | Omron |
|---|---|
| Model | S8M |
| Category | Surge Protector |
| Language | English |
Introduces the S8M's features, digital processing, and advantages over mechanical protectors.
Explains the three operating modes (Run, Setting, Test) and how to switch between them.
Summarizes tripping and alarm functions, external outputs, and input specifications.
Outlines typical startup procedures using keys or the support tool.
Identifies and describes the S8M's physical components and their functions.
Provides block diagrams showing the internal circuitry of different S8M models.
Lists detailed electrical and environmental ratings and characteristics for S8M models.
Explains core functions like current protection, over/undervoltage alarms, and over-temperature output.
Describes the function that applies a time delay to branch output connections upon startup.
Details the function that applies a time delay to branch output cutoffs.
Specifies precautions for selecting an installation site and maintaining ambient conditions.
Provides instructions for mounting the S8M on a DIN rail and its correct orientation.
Details wiring precautions, recommended wire types, and torque specifications for terminals.
Explains how to create and connect cables for RS-232C communication.
Presents a comprehensive table of all settable parameters, their display, and access levels.
Lists the setting ranges and default values for each S8M parameter.
Describes how to navigate the Mode Selection Menu and switch between modes.
Explains how to change the protection level to restrict parameter access.
Details the procedure to enter Setting Mode from Run or Test Mode.
Guides users through setting parameters specific to each branch output.
Covers parameters that apply across multiple branches, like alarms and run time.
Explains settings for startup/shutdown sequences, tripping inputs, and communication.
Explains how to use Test Mode for checking branch output connections before operation.
Details the procedure for testing and manually connecting/disconnecting branch outputs.
Describes how to verify the startup and shutdown sequence operations.
Explains how to operate the S8M in Run Mode and monitor various parameters.
Guides users through downloading and installing the S8M Support Tool software.
Explains how to launch the Support Tool and navigate its interface.
Details how to configure, save, and download parameters using the Support Tool.
Describes how to monitor the S8M's operating status using the Support Tool.
Covers configuring communications settings and protection levels via the Support Tool.
Outlines the communication specifications and methods used by the S8M.
Explains the structure of command and response frames for S8M communication.
Describes available communication services like reading data and executing commands.
Details the service for reading the controller's model and version information.
Explains how to read the model number and communications buffer size.
Describes the service for reading the S8M's operating and error status.
Explains the procedure for performing an echoback test for communication verification.
Details the commands for controlling S8M operations like connect, disconnect, and reset.
Provides a list of response codes and their meanings for communication errors.
Lists ASCII character codes for communication data.
Offers solutions for common observed problems encountered during S8M operation.
Lists and explains error codes displayed on the S8M's seven-segment display.
Provides instructions on how to clear errors using the Reset Key or Support Tool.
Defines key terms and concepts related to the S8M Digital Multicircuit Protector.
Illustrates the menu flow for navigating between different operating modes.
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