User manual HONEYWELL F DATASHEET

[. . . ] Additional evaluation modules can be plugged in. Type series Electrical connection F. . . + ED 1 Terminal connection F. . . + ED 3 Plug connection Output signal 0­10 V and 0­20 mA Voltage output characteristic Output signal 0­10 V Current output characteristic Pressure transmitters for overpressure, vacuum, differential pressure 69 Ty p e s e r i e s F . . . + E D 3 with plug connection · Openable plug connection is easy to fit and service, with a transparent front · 0­10 V output (invertible) · Plug-in display module AZ 331 Pressure and differential pressure transmitters of the F. . . + ED 3 series (with voltage output) are almost identical to versions . . . ED 1. Possible settings are described on pages 71 ­ 72. FN. . . FHBN. . . Characteristic ED 3 Product Summary Operating range (nominal range) P0­PN Smallest adjustable operating range Max. [. . . ] The output signal is sent from each module for further evaluation via the same route. Long-term drift Repetition accuracy Accuracy class Temperature drift Influence of static pressure Mounting position Ambient temperature Max. medium temperature Connection schemes Terminal connection Storage temperature Plug connection !Important: When connecting to control systems with a common AC supply, the ground conductor must be looped through. That is to say, on all devices in the system, the same reference potential must be present at the corresponding ground terminal (terminal 2). In the case of a DC supply, ensure correct polarity. ED 3 output signal 0­10 V Pressure transmitters 71 Ty p e s e r i e s F Adjustment and operation Operating ranges and output signals are adjustable over a wide range. An outstanding characteristic of the pressure transmitters is the variability of the characteristic curve, which means that the pressure range and output signal can be adapted to any subsequent control system. P0 = starting pressure of nominal range PN = nominal pressure (end point of nominal range) PA = starting pressure of set range PE = end pressure of set range Operator interface ED 1 1 = Setting spindle for setting the final value PE 2 = Setting potentiometer for setting the initial value PA 3 = Slide switch for selecting the output signal 0­20 mA (0­10 V) or 4­20 mA (2­10 V) 4 = Slide switch for inverting the output signal 5 = Slide switch for changing the steepness of the characteristic in a ratio of 8:5. 70% of the nominal range), select position 5 6 = Plug connector for further evaluation modules Output signals for module ED 1 Basic setting The factory default setting covers the nominal range P0 (usually 0 bar) to PN. Altering the range The range can easily be altered by shifting the end point and adjusting the steepness of the characteristic curve. Inversion The output signal can be inverted by means of a slideswitch. Operator interface ED 3 1 = Setting spindle for setting the final value PE 2 = Setting potentiometer for setting the initial value PA 4 = Slide switch for inverting the output signal 6 = Plug connector for further evaluation modules Output signals for module ED 3 Range alteration and inversion as above. If the installation has a fault alarm system, the response threshold should be set below 2. 5 mA. 72 Pressure transmitters Ty p e s e r i e s F Setting and testing Altering the operating range To check functioning or change the settings from outside the system, a test set-up is required which meets the following requirements: 1. It must be possible to apply pressure to the pressure transmitter up to the desired final value. The pressure must be displayed by a sufficiently accurate pressure gauge. To display the output signal a voltmeter with a measuring range of 0­10 V (preferably 0­15 V) or an ammeter with a measuring range of 0­20 mA (preferably 0­25 or 0­30 mA) are required. To supply power to the transmitter, a 24 V AC or 24 V DC voltage source is needed. Set the slide switches (3) and (4) to the correct position (switch 3 is only present on ED 1) Switch (3): Output signal 0­10 V / 0­20 mA or 4­20 mA / 2­10 V (only on ED 1) Switch (4): Direction of action Switch up rising pressure = rising output signal Switch down (INV): rising pressure = falling output signal 3. Using a screwdriver, turn the setting spindle (1) to the desired output signal (depending on position of slide switches (3) and (4): 10 V, 20 mA, 0 V, 0 mA, 4 mA) 6. Apply starting pressure PA With the potentiometer (2), adjust the output signal to the desired value (depending on position of slide switches: 0 V, 0 mA, 10 V, 20 mA, 4 mA) 7. [. . . ] Adjust setting spindle "1" with a screwdriver until the output signal is "0". Retighten the spindle with the spindle locking screw. Pressure transmitters Dimensioned drawings 73 Ty p e s e r i e s F Dimensioned drawings 1 2 3 Dimensioned drawing no. FN 505, FN 510 A 55. 5 90 82 Height of evaluation module = 1 Module height = 34 mm. [. . . ]