BEKA BA627E General Purpose Panel Mounting Set Point Station Instruction Manual
- June 6, 2024
- BEKA
Table of Contents
BEKA BA627E General Purpose Panel Mounting Set Point Station Instruction
Manual
DESCRIPTION
The BA627E is a general purpose, loop powered Set Point Station that enables
the current flowing in a 4/20mA loop to be adjusted from within a process area
using the instrument’s front panel push buttons. The BA627E incorporates a 5
digit display that may be calibrated to show the 4/20mA
output current in any linear engineering units. A 31 segment bargraph displays
the current output. The Set Point Station output current may also be
controlled by an external three wire quadrature encoder.
An optional factory fitted backlight, which may be loop or separately powered is available.
This abbreviated instruction sheet is intended to assist with installation and commissioning, a comprehensive instruction manual describing system design and calibration may be downloaded from the BEKA website www.beka.co.uk/manuals.html or may be requested from the BEKA sales office.
INSTALLATION
The BA627E Set Point Station has IP66 front of panel protection but it should be shielded from continuous direct sunlight and severe weather conditions. The rear of the instrument has IP20 protection.
Cut-out dimensions Recommended for all installations.
Mandatory to achieve an IP66 seal between the BA627E Set Point Station and the instrument panel
90 +0.5/-0.0 x 43.5 +0.5/-0.0mm 7.5 48
Terminals for optional backlight
Terminals for optional external rotary encoder
Support panel wiring to prevent vibration damage
Fig 1 Cut out dimensions and terminals
The BA627E is CE marked to show compliance with the European EMC Directive 2004/108/EC.
Fig 2 Installation procedure
EMC
For specified immunity all wiring should be in screened twisted pairs, with the screens earthed at one point.
Abbreviated Instructions for
BA627E general purpose panel mounting Set Point Station
Fig 3 Typical remote set point application
Scale card
The Set Point Station’s units of measurement are shown on a printed scale card visible through a window at the right hand side of the display. The scale card is mounted on a flexible strip that is inserted into a slot at the rear of the instrument as shown below.
Fig 4 Inserting scale card into slot at the rear of BA627E
Thus the scale card can easily be changed without removing the Set Point Station from the panel or opening the instrument enclosure.
New Set Point Stations are supplied with a printed scale card showing the requested units of measurement, if this information is not supplied when the instrument is ordered a blank card will be fitted.
A pack of self-adhesive scale cards printed with common units of measurement is available as an accessory from BEKA associates. Custom printed scale cards can also be supplied.
To change a scale card, unclip the end of the flexible strip that is accessible from the rear of the instrument by gently pushing it upwards and pulling it out of the enclosure as shown in Fig 4.
Peel the existing scale card from the flexible strip and replace it with a new printed card, which should be aligned as shown below. Do not fit a new scale card on top of an existing card.
Align the self-adhesive printed scale card onto the flexible strip and insert
the strip into the instrument as shown.
Fig 5 Fitting scalecard to flexible strip
OPERATION
The BA627E Set Point Station is controlled and configured via four front panel push buttons located below the display. In the operating mode i.e. when the Set Point Station is controlling the loop current and the display is showing the output in engineering units, these push buttons have the following functions:
**E*** + ▼Output current slowly decreases. After five seconds the rate of change accelerates so that large changes may be made quickly. Push E button first followed by ▼ button to decrease output current.
**E*** + ▲Output current slowly increases. After five seconds the rate of change accelerates so that large changes may be made quickly. . Push E button first followed by ▲ button to increase output current.
- Optional
E Pushing this button for 5 seconds enables the Set Point Station output to be entered digit by digit in engineering units using the ▲ or ▼ push button to adjust the flashing digit and the P button to move control to the next digit. When set as required pressing the E button will enter the new set point value and the output current will change.
P While this button is pushed the BA427E Set Point Station will display one of three alternatives depending upon how the instrument has been configured:
Output current in mA
Output as a % of span
Access to pre-set outputs
The display will flash. While continuing to press the P button, operating the
▼ or ▲ button will show the identification of the preset closest to the
present Set Point Station output, followed by the preset value. Operating the
▼ or ▲ button will scroll through the five presets and an ‘Abort’ position.
Releasing both buttons will leave the selected preset value or ‘Abort’ legend
flashing for ten seconds, during which time operating the E button will update
the Set Point Station output to the displayed preset value. If the E button is
not operated during this period, the Set Point Station output will not be
changed and the original engineering display will be shown.
▼ While this button is pushed the Set Point Station will display the numerical value the Set Point Station has been calibrated to display with a 4mA output. When released the normal display in engineering units will return.
▲ While this button is pushed the Set Point Station will display the numerical value the Set Point Station has been calibrated to display with a 20mA input. When released the normal display in engineering units will return.
P + ▼ Firmware number followed by version.
P + E Access to configuration menu via optional security code.
CONFIGURATION
The BA627E Set Point Station is supplied calibrated as requested when ordered, if not specified default configuration will be supplied but can easily be changed on-site.
Fig 6 shows the location of each function within the configuration menu with a brief summary of the function. Please refer to the full instruction manual for detailed configuration information.
Access to the configuration menu is obtained by pressing the P and E buttons simultaneously. If the Set Point Station security code is set to the default ‘0000’ the first parameter ‘rE5n’ will be displayed. If the Set Point Station configuration menu is protected by a non-default security code, ‘CodE’ will be displayed and the non-default code must be entered to obtain access to the menu.
Fig 6 Configuration menu
Manuals and data sheets can be downloaded from
http://www.beka.co.uk/ba627e
BEKA associates Ltd. Old Charlton Rd, Hitchin, Hertfordshire, SG5 2DA, UK
Tel: +44(0)1462 438301 Fax: +44(0)1462 453971
e-mail: [email protected] web:
www.beka.co.uk