Code 700756: Flow monitor coolant low pressure

The coolant (flushing water) was switched on, but after the monitoring delay time elapsed, the PLC input signal "Flow control device coolant low pressure" is still at signal state (0). After switching on the coolant, the flow control device is monitored at signal state (1) after a short delay time. Read disable Feed Stop Spindle Stop 1. Check the PLC output signal and activation for the 1st coolant pump and 1st coolant valve. 2. Check the setting of the flow control device and the coolant flow. 3. Check the PLC input signal "Flow control device coolant low pressure". 4. As soon as the malfunction is remedied, press the following key: [FEED START] Message is cleared. The delay time variable for monitoring during switch-on is set to 5 seconds by default. Flow control device coolant low pressure: DB181.DBD2524 in ms If there is no flow control device in the system, this monitoring function can be deactivated with a machine parameter. Without flow control device coolant low pressure: MD 14512[29] bit 0 = 0 Error messages Cooling lubrication Flow monitor coolant low pressure