Applicable Systems
PSE200/PSE201
Symptoms
The SMC PSE200/PSE201 controller displays a pressure range error. The measured pressure has exceeded the lower limit of the set pressure range. The applied pressure is outside the configured operating range, indicating either a process upset or a sensor calibration issue.
Possible Causes
- Actual system pressure dropped below the configured minimum threshold
- Air supply interruption or compressor failure causing pressure loss
- Pneumatic leak downstream of the sensor reducing pressure
- Sensor drift causing the reading to be lower than actual pressure
Troubleshooting Steps
- Step 1: Check controller display for pressure range error and current pressure reading
Error displayed with pressure reading below set range minimum - Step 2: Verify actual system pressure with independent pressure gauge at sensor port
Independent gauge confirms low pressure condition - Step 3: Inspect pneumatic system for leaks, check compressor and regulator operation
No leaks found, compressor operating normally, regulator set correctly - Step 4: Recalibrate or replace sensor if independent gauge shows normal pressure
Sensor recalibrated, reading matches independent gauge within tolerance
How to Reset
To reset: 1) Restore system pressure to within the set range. 2) Reset the applied pressure to a level within the set pressure range. 3) The controller automatically returns to measurement mode after 1 second.
Frequently Asked Questions
- Q: How do I set the pressure range on PSE200?
The pressure range is set via the controller front panel. Navigate to the setting menu, input the upper and lower pressure limits for the desired channel. Refer to the instruction manual for detailed procedure.
- Q: What happens after the pressure range error clears?
After 1 second, the controller automatically returns to measurement mode. No manual reset is required for this error condition.
Source: SMC PSE200/PSE201 Instruction Manual, Document PSE200-TF2Z048 (smc.com.cn)
Category: Hydraulic & Pneumatic