Hydrastep 2468CB and 2468CD Manual | 2468CB & 2468CD Dual Power Supply Version |
This concludes the electrical installation requirements for the basic instrument configuration. Connections within the enclosure for the options available will be covered in the Installation sections of the appropriate Chapter 3a (Relay Outputs), 3b (Relay with time delay Outputs), 3c
2.5SYSTEM CONFIGURATION
This section describes mains voltage selection, analogue output setting and electrode error configuration on each input board. Also the ‘number of electrodes’ setting and configuration of the water/steam switching threshold value display board is described.
The three main PCBs require configuration. These are:
∙Two Input Boards - PCB 24680501 or 24680516
∙Display Board - PCB 24680515
2.5.1INPUT BOARD (PCB 24680501 OR 24680516)
Two settings may be configured on this board, the analogue output range and sense, and the electrode error configuration.
2.5.1.1Analogue Output Configuration
WARNING Mains voltages are present in this instrument when power is connected.
Two sets of split pads are provided to select the required range
To configure the analogue output, refer to Table 2.1 then:
1.Ensure the power supply is disconnected.
2.Locate the position of split pads SP1 and SP2 on the input board (PCB).
3.Refer to Table 2.1, select which configuration is required and where ‘bridged’ is ticked, bridge the gap on the pad with solder. Where ‘open circuit’ is ticked, ensure that any solder bridge on the split pad is removed and the gap is clean.
4.Carry out a resistance test across any altered split pad for short circuit or open circuit conditions as appropriate.
Table 2.1 - Analogue output configurations
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