SERVICE 7 MFC 400 7.7.1 Disassembly of aluminum or stainless steel field housing • Remove all the covers (2, 3, 5) on housing and console by unscrewing. Non standard versions can have interlocking headscrews which then have to be unscrewed first with Allen key 4. • Disconnect all electric cables from connection terminals (if still attached). • Remove all the cable glands, stopping plug and plastic insert of the housing 1. • Remove the electronics insert and display 6.
7 SERVICE MFC 400 7.7.2 Disassembly of aluminum or stainless steel compact housing • Remove all the covers (2, 3) on housing and console by unscrewing. Non standard versions can have interlocking headscrews which then have to be unscrewed first with Allen key 4. • Disconnect all electric cables from connection terminals (if still attached). • Remove all the cable glands, stopping plug and plastic insert of the housing 1. • Remove the electronics insert and display 4.
SERVICE 7 MFC 400 7.7.3 Location of battery The battery is located on the PCB as shown in the following figure. • Remove the battery 5 by taking out of the holder. • Lead it to the re-usage and/or recycling process. Figure 7-3: Location of battery on display unit 1 2 3 4 5 Front panel LCD display Pre-assembled cable PCB Battery 7.7.4 Overview of the materials and components The items mentioned in the listing below are the main parts of the device. The device can be ordered in different versions.
7 SERVICE MFC 400 Material/components, which can disturb recycling processes Material (or material code) Weight Additional information [kg] [lb] Mixture ABS / steel - - - Metal mixture 0.0188 0.0414 Bolts, washers, screws, cable clamp Plastics mixture - - - Silicon / rubber 0.030 0.067 - PVC & connector parts 0.012 0.026 E.g. on cables, display foil Copper, Brass, other 0.024 0.
TECHNICAL DATA 8 MFC 400 8.1 Measuring principle The signal converter has been designed to work with all the measuring tube designs used in the mass flowmeters. For information regarding the measuring principle for a specific measuring tube design, please refer to the technical documentation of the relevant flow sensor. 8.2 Technical data INFORMATION! • The following data is provided for general applications.
8 TECHNICAL DATA MFC 400 Display and user interface Graphic display LC display, backlit white. Size: 256 x 128 pixels, corresponds to 59 x 31 mm = 2.32" x 1.22" Display turnable in 90° steps. Ambient temperatures below -25°C / -13°F may affect the readability of the display. Operating elements 4 push buttons/optical keys for operator control of the signal converter without opening the housing.
TECHNICAL DATA 8 MFC 400 Measuring accuracy Reference conditions Medium: water Temperature: +20°C / +68°F Pressure: 1 bar / 14.5 psi Maximum measuring error Refer to technical data for the flow sensor. Operating conditions Temperature Process temperature Refer to technical data for the flow sensor. Ambient temperature Depending on the version and combination of outputs.
TECHNICAL DATA MFC 400 Materials Signal converter housing Standard: die-cast aluminum (polyurethane coated) Option: stainless steel 316 / 1.4408 Flow sensor For housing material, process connections, measuring tubes, accessories and gaskets, refer to technical data for the flow sensor.
TECHNICAL DATA 8 MFC 400 Inputs and outputs General All outputs are electrically isolated from each other and from all other circuits. All operating data and output values can be adjusted. Description of abbreviations Uext = external voltage; RL = load + resistance; U0 = terminal voltage; Inom = nominal current Safety limit values (Ex i): Ui = max. input voltage; Ii = max. input current; Pi = max. input power rating; Ci = max. input capacity; Li = max.
8 TECHNICAL DATA MFC 400 HART® Description HART® protocol via active and passive current output HART® version: V7 Universal HART® parameter: completely integrated Load ≥ 230 Ω at HART® test point; Note maximum load for current output! Multi-Drop operation Disabled loop current mode, output current = 0%, e.g. 4 mA Multi-Drop address adjustable in operation menu 0...
TECHNICAL DATA 8 MFC 400 Passive Uext ≤ 32 VDC - fmax in operating menu set to fmax ≤ 100 Hz: I ≤ 100 mA open: I ≤ 0.05 mA at Uext = 32 VDC closed: U0, max = 0.2 V at I ≤ 10 mA U0, max = 2 V at I ≤ 100 mA fmax in operating menu set to 100 Hz < fmax ≤ 10 kHz: I ≤ 20 mA open: I ≤ 0.05 mA at Uext = 32 VDC closed: U0, max = 1.5 V at I ≤ 1 mA U0, max = 2.5 V at I ≤ 10 mA U0, max = 5.0 V at I ≤ 20 mA NAMUR Passive to EN 60947-5-6 Passive to EN 60947-5-6 Uext = 8.2 V ± 0.
8 TECHNICAL DATA MFC 400 Status output / limit switch Function and settings Adjustable as automatic measuring range conversion, display of flow direction, overflow, error or switching point. Valve control with activated dosing function Status and/or control: ON or OFF Operating data Modular I/Os Fixed I/Os Active Uint = 24 VDC I ≤ 20 mA - open: I ≤ 0.05 mA closed: U0, nom = 24 V at I = 20 mA Passive Uext ≤ 32 VDC - I ≤ 100 mA RL, max = 47 kΩ RL, min = (Uext - U0) / Imax open: I ≤ 0.
TECHNICAL DATA 8 MFC 400 Control input Function Hold value of the outputs (e.g. for cleaning work), set value of the outputs to "zero", counter and error reset, stop counter, range conversion, zero calibration Start of dosing when dosing function is activated. Operating data Modular I/Os Fixed I/Os Active Uint = 24 VDC - External contact open: U0, nom = 22 V External contact closed: Inom = 4 mA Contact open (off): U0 ≥ 12 V with Inom = 1.9 mA Contact closed (on): U0 ≤ 10 V with Inom = 1.
8 TECHNICAL DATA MFC 400 Profibus DP Description Galvanically isolated according to IEC 61158, test voltage 500 VAC RMS Profile version: 3.02 Automatic data transmission rate recognition (max.
TECHNICAL DATA 8 MFC 400 PROFINET IO Description PROFINET IO is an Ethernet based communications protocol. The device features two Ethernet ports with an integrated industrial Ethernet switch. The Ethernet standard 100BASE-TX is supported.
8 TECHNICAL DATA MFC 400 Option (F version only) ATEX II 2 (1) G - Ex db [ia Ga] IIC T6 Gb II 2 (1) G - Ex db eb [ia Ga] IIC T6 Gb II 2 (1) D - Ex tb [ia Da] IIIC T75°C Db II 2 G - Ex db eb [ia] IIC T6 Gb II 2 D - Ex tb IIIC T75°C Db NEPSI Ex d ia [ia Ga] IIC T6…T1 Ga/Gb; Ex de ia [ia Ga] IIC T6…T1 Ga/Gb Option FM / CSA FM: Class I, Div 1 groups A, B, C, D CSA: Class I, Div 1 groups C, D Class II, Div 1 groups E, F, G Class III, Div 1 hazardous areas FM: Class I, Div 2 groups A, B, C, D CSA: Class I,
TECHNICAL DATA 8 MFC 400 8.3 Dimensions and weight 8.3.1 Housing Figure 8-1: Dimensions for field housing (F) - remote version Dimensions [mm / inch] a 202 / 7.95 b 120 / 4.72 c 155 / 6.10 Weight [kg / lb] g h 296 / 11.65 277 / 10.90 Aluminum housing 6 / 13.2 Stainless steel housing 13 / 28.7 Table 8-1: Dimensions and weight of field housing INFORMATION! The total dimensions and weight of the compact device are depending on the nominal diameter and the material of the flow sensor.
8 TECHNICAL DATA MFC 400 8.3.2 Mounting plate of field housing Figure 8-2: Dimensions for mounting plate of field housing [mm] a [inch] 72 2.8 b 72 2.8 c Ø9 Ø0.4 Table 8-2: Dimensions in mm and inch 132 www.krohne.com 01/2021 - 4002075808 - MA MFC400 ER2.
DESCRIPTION OF HART INTERFACE 9 MFC 400 9.1 General description The open HART® protocol, which can be used freely, is integrated into the signal converter for communication. Devices which support the HART® protocol are classified as either operating devices or field devices. When it comes to operating devices (Master), both manual control units (Secondary Master) and PC-supported workstations (Primary Master) are used in, for example, a control centre.
9 DESCRIPTION OF HART INTERFACE MFC 400 9.3 Connection variants The signal converter is a 4-wire device with 4...20 mA current output and HART® interface. Depending on the version, the settings and the wiring, the current output can operate as passive or active output. • Multi-drop mode is supported In a multi-drop communication system, more than 2 devices are connected to a common transmission cable.
DESCRIPTION OF HART INTERFACE 9 MFC 400 9.3.1 Point-to-Point connection - analogue / digital mode Point-to-Point connection between the signal converter and the HART® Master. The current output of the device may be active or passive.
9 DESCRIPTION OF HART INTERFACE MFC 400 9.3.2 Multi-Drop connection (2-wire connection) In the case of a multi-drop connection, up to 15 devices may be installed in parallel (this signal converter and other HART® devices).
DESCRIPTION OF HART INTERFACE 9 MFC 400 9.3.3 Multi-Drop connection (3-wire connection) Connection of 2-wire and 4-wire devices in the same network. In order that the current output of the signal converter is working continuously active, an additional third wire must be connected to the devices in the same network. These devices must be powered via a 2-wire loop.
9 DESCRIPTION OF HART INTERFACE MFC 400 9.4 Inputs/outputs and HART dynamic variables and device variables The signal converter is available with various input/output combinations. The connection of the terminals A…D to the HART® dynamic variables PV, SV, TV and 4V depends on the device version.
DESCRIPTION OF HART INTERFACE 9 MFC 400 HART® device variable Code Type Explanations Concentration Flow 1 Volume 15 linear Available when concentration measurement is switched on and Concentration mode 1 measures % volume or % alcohol per volume. Concentration Flow 2 Mass 16 linear Available when concentration measurement is switched on and Concentration 2 is not switched off and Concentration mode 1 does not measure % volume or % alcohol per volume.
10 DESCRIPTION OF BLUETOOTH INTERFACE MFC 400 The signal converter is optionally equipped with a Bluetooth® interface. This interface provides wireless access to the signal converter for convenient parametrisation and service diagnosis via standard mobile devices, such as smartphones or tablet computers. The interface is accessed by the KROHNE OPTICHECK Flow Mobile app, which is available for Google Android™ and Apple® iOS operation systems. 10.1 Introduction 10.1.
MFC 400 DESCRIPTION OF BLUETOOTH INTERFACE 10 10.2 Security considerations Remote access to the signal converter via Bluetooth® requires additional security mechanisms. The existing perimeter security (i.e. limited physical access) is no longer sufficient, because wireless connections do not require physical access to the signal converter. 10.2.1 Wireless security concept The converter is equipped with a multi-layered wireless security concept.
10 DESCRIPTION OF BLUETOOTH INTERFACE MFC 400 10.3 Field device setup The Bluetooth® interface is an optional feature and must be purchased before it can be used. Please contact your sales representative on information how to order and activate the Bluetooth® feature, if it is not yet available. For security reasons, the Bluetooth® interface must be parametrised and enabled locally at the field device before a connection is possible.
DESCRIPTION OF BLUETOOTH INTERFACE 10 MFC 400 Mechanical switch (switch position) Software setting Resulting access level No access (OFF) No access No access 1 Read only (R/-) No access No access Read only Read only No access No access Read only Read only Read + Write Read + Write Read + Write (R/W) Table 10-2: Access level selection via mechanical switch and software settings 1 If the mechanical switch is in the OFF position, the Bluetooth® interface is disabled by a hardware mechanism.
10 DESCRIPTION OF BLUETOOTH INTERFACE MFC 400 10.3.3 Bluetooth access level setting via software (C8.1.0 Access Level) The access level can be further limited by a software setting in menu C8.1.0. The available options depend on the position of the mechanical switch. For details refer to previous section. INFORMATION! The software setting may change when the mechanical switch is operated.
DESCRIPTION OF BLUETOOTH INTERFACE 10 MFC 400 10.3.5 LED Signalling (C8.3.0) The connection status of the Bluetooth® interface can be signalled via the MS (S1) LED on the local display (for details refer to Display and operating elements on page 54). The functionality can be turned on and off by menu C8.3.0. The LED signalling for the Bluetooth® interface may not be available for all signal converter configurations.
10 DESCRIPTION OF BLUETOOTH INTERFACE MFC 400 10.3.7 Check Bluetooth connection status (B1.7.1) The status of the Bluetooth® interface is displayed in detail in menu B1.7.1: Connection status Description Off Bluetooth® interface turned off. Advertising Bluetooth® interface is enabled and ready for connection. Connected Bluetooth® interface connected. Lockout Bluetooth® is temporarily or permanently disabled due to failed authentications (for details refer to Reset Bluetooth lockout (A2.7.0, C8.4.
DESCRIPTION OF BLUETOOTH INTERFACE 10 MFC 400 10.5 FCC and ISED statements FCC statements RF Exposure The equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. The equipment should be operated with minimum distance of 20 cm between the device and user’s body. End users must follow the operation instructions for satisfying RF exposure compliance. §15.19(3) 15.19(3) This device complies with part 15 of the FCC Rules.
10 DESCRIPTION OF BLUETOOTH INTERFACE MFC 400 ISED statements, CAN ICES-3 (A)/NMB-3(A) RF Exposure The equipment complies with ISED RSS-102 radiation exposure limits set forth for an uncontrolled environment. The equipment should be operated with minimum distance of 20 cm between the device and user’s body. End users must follow the operation instructions for satisfying RF exposure compliance. Contact for ISED queries: ised-approval@krohne.com 148 www.krohne.com 01/2021 - 4002075808 - MA MFC400 ER2.
NOTES 11 MFC 400 01/2021 - 4002075808 - MA MFC400 ER2.1 R08 en www.krohne.
11 NOTES 150 MFC 400 www.krohne.com 01/2021 - 4002075808 - MA MFC400 ER2.
NOTES 11 MFC 400 01/2021 - 4002075808 - MA MFC400 ER2.1 R08 en www.krohne.
KROHNE – Products, Solutions and Services • Process instrumentation for flow, level, temperature, pressure measurement © KROHNE 01/2021 - 4002075808 - MA MFC400 ER2.1 R08 en - Subject to change without notice. and process analytics • Flow metering, monitoring, wireless and remote metering solutions • Engineering, commissioning, calibration, maintenance and training services Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.
