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We have a Parker DC590+ connected to a Parker TS8003 HMI.
In the HMI program, the displayed values of the START(C3) and DRIVE START parameters (Tags 68 & 82) remain at OFF even though they must be ON/TRUE because start is initiated via the physical C3 input, the contactor is closed and the motor is running. Strangely, the CONTACTOR CLOSED parameter (Tag 83) does go to ON.
I have tried displaying the parameters directly (as a Status Text object with 590 as the data source) and as a Data Tag but both stubbornly remain OFF.
Are START(C3) and DRIVE START momentary signals that would not be seen by the HMI, or do I need to configure something else in order to read their values?
Actually for the drive to start Program stop (NOT FAST STOP) has to be true(Read only parameter 80)Coast Stop stop (NOT COAST STOP) has to be true(Read only parameter 525)both Enable (497) and Aux Enable (168) have to be trueboth Start (68) and Aux Start (161) have to be true
Typically if the drive is controlled over COMs both C3 and C5 are connected to C9Start is initiated by AUX START (161)
Parameter 68 is a read-only bit in the Sequence StatusIt means that terminal C3 has +24V
Parameter 82 is a read-only bit in the Sequence StatusIt means that: C5 is trueAux Start (161) is trueThe drive is at standstillThe MC contactor is pulled inPhase Lock (Hz = 45 - 65 Hz) is trueCoast stop is not commanded
Hi Sam, thanks for the swift response.
Perhaps my description isn't clear. This is a parameter display / reading problem in the HMI, not a control issue.
We have no problem starting the drive and and all the conditions you list are met. This is an 8 year old rig which has been running fine all that time.
Currently it is started and stopped by electromechanical switches on the drive cabinet using the recommended connection method.
The issue is, that despite the drive starting and the motor running correctly, the values displayed on the HMI for the START(C3) and DRIVE START remain at OFF despite the fact that they must be ON/TRUE for the drive and motor to be rumming.
As I said in my original post, are START(C3) and DRIVE START momentary signals that would not be seen by the HMI, or do I need to configure something else in order to read their values?
Could you send a couple of you configuration for the drive and HMI to our support email as well?
Yes, tag numbers 68 and 82. The protocol is whatever the Parker TS8003 uses to communicate with the drive, RS485 EI ASYNC ASCII I think.
I had already sent an email to the US support address email@example.com on November 29th, before I discovered the forum, asking the same question and with my DSI file attached.
The company is SMT Ltd and the email subject was "DC590+ parameter read help".
I will send a copy of the drive configuration with the same subject title now.
Have you monitored the outputs in DSE Lite while the drive is running?
Yes, that's how I know they don't change when the motor is started. They are monitored on the 'DS' page of the DSi program I sent, which is accessed by teh F1 key from the 'Menu' page.
Sorry, scratch that answer. I have not used DSE Lite to monitor the values, only the DSi program on the TS8003. I will look into it.