Hello,
Is DRR245 grounds isolated?
[DRR245] Isolation
-
- Moderatore
- Posts: 1665
- Joined: 29/10/2010, 10:09
- Contact:
Re: DRR245 ground
Hi,
power supply is isolated form Analog input, also analog output is isolated form power supply. Power supply only need neutral and phase line, not ground (isolated).
power supply is isolated form Analog input, also analog output is isolated form power supply. Power supply only need neutral and phase line, not ground (isolated).
-
- Posts: 19
- Joined: 25/02/2014, 13:37
Re: [DRR245] Isolation
Hi,
we have one place where we have some problems with Modbus communication.
When there is no connection with Input sensor (PT100 - 3 wire), then we can read process value trough Modbus, but when we connect PT100, we can not reach DRR245.
HAve You seen such kind of situation?
we have one place where we have some problems with Modbus communication.
When there is no connection with Input sensor (PT100 - 3 wire), then we can read process value trough Modbus, but when we connect PT100, we can not reach DRR245.
HAve You seen such kind of situation?
-
- Moderatore
- Posts: 1665
- Joined: 29/10/2010, 10:09
- Contact:
Re: [DRR245] Isolation
Hi,
try to connect the PT100 to the DRR245 but keep the probe on your hand or on a isolated table (wood etc). I think is because the rs485 shield is connected to the ground and also the cable of the probe (in this way you lose the insulation).
try to connect the PT100 to the DRR245 but keep the probe on your hand or on a isolated table (wood etc). I think is because the rs485 shield is connected to the ground and also the cable of the probe (in this way you lose the insulation).