Summary of Contents for BEKA BA627E
- Page 1 BA627E General Purpose 2-wire 4/20mA manual set point station. For instruments with firmware 1.03 and earlier. Issued before June 2015. Issue 7 Issue: 7 September 2015...
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Page 2: Table Of Contents
5.12 Reset to factory defaults 6. Maintenance 6.1 Fault finding during commissioning 6.2 Fault finding after commissioning 6.3 Servicing 6.4 Routine maintenance 6.5 Guarantee 6.6 Customer comments The BA627E is CE marked to show compliance with the European EMC Directive 2004/108/EC... -
Page 3: Description
Set Point Station which enables the current flowing in a 4/20mA loop to be manually where the BA627E is being used to adjust the set adjusted from within a process area via the front point of a speed controller, the internal indicator may be calibrated to display the required speed in RPM. -
Page 4: Controls
E button will enter the new set point. 2.2 Displays The BA627E Set Point Station has a 5 digit display While this button is pushed the BA627E plus a 31 segment bargraph. Set Point Station will display one of three alternatives depending upon how the The digital display may be calibrated using the ‘CAL’... -
Page 5: 4/20Ma Loop
4/20mA loop 4.1 Location The BA627E requires an operating voltage between The BA627E Set Point Station has a robust glass 6.1 and 30V. Design of the loop is similar to that for reinforced Noryl enclosure with a toughened glass a 2-wire temperature or pressure transmitter. -
Page 6: Emc
Station has IP66 protection, it should be shielded from direct sunlight and severe weather conditions. 4.2 EMC BA627E Set Point Stations comply with the requirements of the European EMC Directive 2004/108/EC. For specified immunity all wiring should be in screened twisted pairs, with the cable screen earthed at one point. - Page 7 Align self-adhesive printed scale card onto the flexible strip and insert the strip into the Set Point Station as shown below. Fig 5 Inserting flexible strip carrying scale card into slot at the rear of Set Point Station.
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Page 8: Configuration And Calibration
5. CONFIGURATION AND CALIBRATION 5.1 Summary of configuration functions Set Point Stations are configured and calibrated via This section summarises each of the configuration the four front panel push buttons. All the functions and includes a cross reference to a more configuration functions are contained in an easy to detailed description. -
Page 9: Pre-Set Outputs
Display Summary of function Display Summary of function 'CodE' Security code 'H - - L' High & low current output limits Defines a four digit numeric code that Defines the lower ‘Lo’ and upper ‘Hi’ 4/20mA Set Point Station output current must be entered to gain access to the configuration menu. - Page 11 5.2 Adjustment resolution: ‘rE5n’ Although calibration is normally performed at This function enables the adjustment resolution of 4.000mA and 20.000mA, other currents may be used providing they differ by more than 4mA. the front panel ▲ and ▼ buttons and the optional alternative external rotary control to be defined.
- Page 12 BA627E is used as the set point input for a temperature controller. To obtain a reverse acting display i.e. the Set Point Station display decreases as the output current increases, the required display value entered into To enter pre-set values select ‘P5Et’...
- Page 13 5.8 Maximum output rate of change: ‘rAtE’ The BEKA BA490 Is a panel mounting encoder that To minimise plant disturbance when the Set Point generates 12 contact pulses per revolution and is intended for use with the BA627E. Other encoders Station output current is adjusted, the maximum rate of change is defined by this function.
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Page 14: Maintenance
6.2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE If a BA627E Set Point Station fails after it has been functioning correctly follow the procedure shown in section 6.1. If this does not reveal the cause of the fault, it is recommended that the Set Point Station is replaced. - Page 15 7. ACCESSORIES 7.1 Scale card The BA627E Set Point Station has a window on the right hand side of the display through which the scale card showing the units represented by the output current such as ºC or mBar can be seen.
- Page 16 5, 6 and 7 enable a wide range of three wire quadrature encoders with switch contact outputs to be directly connected to the BA627E. To prevent accidental adjustment, the encoder only changes the Set Point Station’s output when the E button is operated.
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