Page 1 Motion Sensors Milltronics MFA 4p Operating Instructions Edition 08/2017...
Page 3 ___________________ Introduction ___________________ Milltronics MFA 4p Overview ___________________ Milltronics Installing/mounting ___________________ Connecting Motion Sensors Milltronics MFA 4p ___________________ Service and maintenance ___________________ Troubleshooting Operating Instructions ___________________ Technical data ___________________ Dimension drawings ___________________ Technical Reference ___________________ Applications ___________________ Support 08/2017 A5E33988839_AB...
Page 4 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
Page 5: Table Of Contents
Table of contents Introduction ............................. 5 Transportation and Storage ...................... 5 Unit Repair and Excluded Liability .................... 5 Milltronics MFA 4p Overview ........................7 Installing/mounting ..........................9 Location Requirements ......................9 Proper Mounting ........................9 Mounting Details ........................10 Wiring ............................11 Connecting ............................
Page 6 Belt Conveyors ........................48 Screw Conveyors ........................48 Screw Conveyor Flights ......................49 End Bearing on Screw Conveyor ................... 49 B.10 Non-ferrous Window ......................50 Support ..............................51 Certificates ..........................51 Index ..............................53 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 7: Introduction
● The user is responsible for all changes and repairs made to the device by the user or the user’s agent. ● All new components are to be provided by Siemens Milltronics Process Instruments. ● Restrict repair to faulty components only.
Page 8 Introduction 1.2 Unit Repair and Excluded Liability Note This product is intended for use in industrial areas. In a domestic environment this device may cause radio interference. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 9: Milltronics Mfa 4P Overview
Milltronics MFA 4p Overview Milltronics MFA 4p is a highly sensitive, single setpoint motion sensor alarm unit, used with MSP and XPP probes. The probe detects an increase or decrease in the speed of rotating, reciprocating, or conveying equipment and sends the information to the MFA 4p. The MFA 4p works with a pre-amplifier which can be internal to the motion sensing probe or remote from the motion sensing probe.
Page 10 Milltronics MFA 4p Overview Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 11: Installing/Mounting
30 A/m requirements of 1EC 60004-8, Power Frequency Magnetic Field Immunity test) will be detected and will result in loss of functionality. Functionality loss indicators: ● Alarm conditions by relay trip ● False pulse readings in LED1 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 12: Mounting Details
● 1.5 m (5 ft) Belden 83321 Teflon cable potted in probe ● Pre-amp is mounted in an enamel painted steel Hammond 1414N4E enclosure Teflon is a registered trademark of E.I. du Pont de Nemours and Company Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 13: Wiring
④ 113 (5.25) O.D. ⑤ 2" NSPL Wiring Where possible, the probe components should be interconnected via flexible conduit. This allows for easier removal or adjustment of the probe and mounting flange assembly. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 14 Installing/mounting 3.4 Wiring Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 15: Connecting
Connecting MFA 4p Circuit Board Layout Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 16: Interconnection
Maximum cable length from probe to RMA is 30 m/100 ft of shielded cable, 18 ga. wire. See Cable length from RMA or IMA to MFA 4p (Page 16) for cable lengths from RMA to main group. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 17: Msp-12 Probe With Ima (Internally Mounted Pre-Amplifier)
Wire can be run in conduit common to motor supply or control wiring. Connection to probe terminals can be made under probe cap. See Cable length from RMA or IMA to MFA 4p (Page 16) for cable lengths from probe at MFA 4p. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 18: Xpp-5 With Ima (Internally Mounted Pre-Amplifier)
Cable length from RMA or IMA to MFA 4p Wire gauge Length in feet Length in meters 22 AWG (0.34 mm 2 500 18 AWG (0.75 mm 5 000 1 520 12 AWG (4 mm 25 000 7 600 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 19: Interconnection Diagram For Xpp-5
Connecting 4.2 Interconnection 4.2.5 Interconnection Diagram for XPP-5 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 20: Connection To Power
● Relay contact terminals are for use with equipment that has no accessible live parts and wiring that has insulation suitable for at least 250 V. The maximum allowable working voltage between adjacent relay contacts shall be 250 V. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 21: Mfa 4P Wiring For Automatic Start Delay
Should the Time Delay feature on start-up not be required, power should be applied continuously from a separate source and the potentiometer turned to zero. This is usually necessary for automatic up-stream startup of conveying devices after the down-stream drive has reached its operation speed. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 22 Connecting 4.4 MFA 4p Wiring for Automatic Start Delay Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 23: Service And Maintenance
0 ppm. 7. Set Start Delay by adjusting potentiometer so that equipment being monitored can attain normal operating speed before LED 2 can turn off. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 24 Note If N.O. contacts were shorted as described in final note of calibration preamble, remove them now as calibration is complete. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 25: Signal Generator Interface
Service and maintenance 5.2 Signal Generator Interface Signal Generator Interface ① Signal generator ② 6 V p-p sine ③ 6 V p-p square ④ 3 V p square Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 26: Cleaning
It is a good idea to periodically check the face of the probe: it should be free of material buildup, corrosion or deformation. Maintenance The Motion Failure Alarm MFA 4p requires no maintenance: however, we recommend a program of periodic checks. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 27: Troubleshooting
20 V 27 V open open polarity Probe wiring 27 V 27 V open open open circuit Probe wiring 27 V open open short circuit Relay defective pulsing 24 V 27 V open open Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 28 Connect an ohm meter across the black and white leads. iii. Nominal probe impedances are as follows: MSP-3 and MSP-9 750 ohms If impedance deviates substantially from these values, an open or short circuit condition is indicated. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 29: Technical Data
● 0.018 %/°C (0.01 %/°F) Setpoint adjustment range ● 2 ... 3 000 ppm (pulses per minute): standard model ● 0.15 ... 15 ppm: slow speed version Dynamic range ● 0 ... 7 200 ppm Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 30: Outputs
Construction Weight ● Polycarbonate enclosure: 1.5 kg (3.3 lb) ● Mild steel or stainless steel enclosure: 4.3 kg (9.5 lb) Approvals ● CE, CSA , FM (C/US) ● EMC performance available on request Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 31: Operating Conditions
-40 ... 60 °C (-40 ... 140 °F) 1.8 kg (4 lb) MSP-3 -50 ... 260 °C (-58 ... 500 °F) 1.4 kg (3 lb) MSP-9 -50 ... 260 °C (-58 ... 500 °F) 1.8 kg (4 lb) Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 32 Technical data 7.6 Operating Conditions Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 33: Dimension Drawings
Suitable location for conduit entrance ③ Lid screws Note • Non-metallic enclosure does not provide grounding between conduit connections: use grounding type bushings and jumpers. • Use only approved, suitable size hubs for watertight application. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 34: Type 4/Nema 4/Ip65 Painted Steel Enclosure & Type 4X/Nema 4X/Ip65 Stainless Steel Enclosure
Suitable location for conduit entrance (customer specified) Note • Painted steel enclosure does not provide grounding between conduit connections: use grounding type bushings and jumpers. • Use only approved, suitable size hubs for watertight application. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 35: Probes
● Cast aluminum body comes with cast aluminum cap and zinc flange, zinc plated locknut, and silicone rubber gasket. ● See Mounting Details (Page 10) ● Pre-amp is mounted in a NEMA 4 cast aluminum enclosure. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 36: Stainless Steel Probe Msp-9
Gasket ② Clamps, 4 places ③ 22 (0.875) ∅, 2 places ④ 102 (4) mounting centers ⑤ 8 (0.312), 4 places ⑥ 171 (6.75) mounting centers ⑦ Cap c/w 22 (0.8758) ∅ hole Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 37: Standard Probe Msp-12
● Aluminum body comes with die-cast aluminum cap and zinc flange, zinc plated locknut, and neoprene gasket. ● See Mounting Details (Page 10) ● Pre-amp is potted in the probe body and comes with two 127 mm (5 inch) long hook-up wires. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 38: Hazardous Locations Xpp-5
– Class I, Div. 1, Groups A, B, C, and D – Class II, Div. 1, Groups E, F, and G – Class III ● Aluminum body with die-cast flange and zinc-plated locknut. ● Pre-amp and cable potted in the probe's body. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 39 Dimension drawings 8.2 Probes See also Interconnection Diagram for XPP-5 (Page 17) XPP-5 with IMA (internally mounted pre-amplifier) (Page 16) Mounting Details (Page 10) Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 40 Dimension drawings 8.2 Probes Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 41: Technical Reference
Principles of Operation MFA 4p Milltronics MFA 4p is a highly sensitive, single setpoint motion sensor alarm unit, used with MSP and XPP probes. The probe detects an increase or decrease in the speed of rotating, reciprocating, or conveying equipment and sends the information to the MFA 4p. The MFA 4p works with a pre-amplifier which can be internal to the motion sensing probe, or remote from the motion sensing probe.
Page 42 10 m/minute (35 ft/minute): with a velocity of 0.61 m/minute (2 ft/minute), a maximum gap of 31 mm (1.25 inch) is possible. Note 25.4 mm = 1 inch and 0.305 m = 1 ft Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 43 Current levels are 12 mA low and 45 mA high. The preamplifier comes internally mounted in the probe, or in an enclosure for remote mounting. Internally mounted pre-amplifiers are called IMAs. Remote mounted pre-amplifiers are called RMAs. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 44 Start Delay potentiometer, keeping the alarm relays energized. If the monitored device does not reach normal speed before the set time period, the relays will de-energize giving an alarm condition. This feature is not applicable in the overspeed detection mode. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 45: Applications
Applications Bucket Elevators Dimensions in mm (inch) Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 46 Applications B.1 Bucket Elevators Figure A Dimensions in mm (inch) Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 47: Bucket Elevator
Applications B.2 Bucket Elevator Bucket Elevator Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 48: Shafts
Where conditions prevent the sensing of buckets, a belt pulley or paddle mounted on an exposed shaft end, preferably the tail pulley, may be used. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 49: Rotating Shaft Of Rotary Feeder
Applications B.4 Rotating Shaft of Rotary Feeder Rotating Shaft of Rotary Feeder Drive Sprocket on Rotary Feeder Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 50: Belt Conveyors
Arrows indicate permissible placement range of the probe A ferrous mass added behind the flight of a screw conveyor, where it passes the probe aids Borderline Operation. This mass must be added for all non-ferrous screws. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 51: Screw Conveyor Flights
Applications B.8 Screw Conveyor Flights Screw Conveyor Flights End Bearing on Screw Conveyor Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 52: Non-Ferrous Window
The probe may not touch the window if temperatures are in excess of 60 °C (140 °F) when using the low temperature probes or 260 °C (500 °F) when using the high temperature probes. Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 53: Support
In addition to our documentation, Siemens provides a comprehensive support solution at: ● Services & Support (http://www.siemens.com/automation/service&support) Personal contact If you have additional questions about the device, please contact your Siemens personal contact at: ● Partner (http://www.automation.siemens.com/partner) In order to find the contact for your product, select under 'All Products and Branches' the path 'Automation Technology >...
Page 54 Support C.1 Certificates Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 55: Index
19 MSP-3, 33 MSP-12 standard probe MSP-9, 34 dimensions, 35 XPP-5, 36 interconnection, 15 Drive sprocket on rotary feeder, 47 mounting details, 11 Dynamic range, 27 MSP-3 high temperature probe dimensions, 33 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 56 Safety notes, 5 Screw conveyor flights, 49 Screw conveyors, 48 Service, 51 Service and maintenance, 24 calibration, 21 cleaning, 24 signal generator interface, 23 Setpoint adjustment range, 27 Shafts, 46 Signal generator interface, 23 Milltronics MFA 4p Operating Instructions, 08/2017, A5E33988839_AB...
Page 57 For more information www.siemens.com/level www.siemens.com/weighing Siemens Canada Limited 1954 Technology Drive Printed in Canada P.O. Box 4225 Subject to change without prior notice Peterborough, ON A5E33988839 Rev. AB Canada K9J 7B1 © Siemens AG 2017 www.siemens.com/processautomation...