Siemens milltronics MFA 4P Instruction Manual
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Siemens milltronics MFA 4P, Page 24 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Applications Shafts These methods are viable if the speed is such that the blades or key will provide the number of pulses required at a minimum velocity of 1.5 m / minute (5 ft. / minute). In applications where exposed moving parts are required, safety shields and precautions should be applied. 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. Belt Conveyors Potential for damage in each application governs the minimum gap allowable. Maximum gap for operation is 102 mm (4"
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 15 mmmmm Wiring 5. If no response is obtained when you set the ppm potentiometer to 3 (below this stability suffers), reset potentiometer fully CW, set switch SW2 to X 10 and then X 1 if required, and repeat step 4. 6. When Relay LED 2 goes on, indicating the incoming pulse rate, turn potentiometer CCW slightly past this point to obtain an operating setpoint that allows for normal fluctuations due to load and voltage variations. For 50% of full speed, set potentiometer (and SW2 if required) to halfway between incoming pulse rate of nor
Siemens milltronics MFA 4P, Page 8 MFA 4p - INSTRUCTION MANUAL 7ML19985FM01 mmmmm Interconnection Interconnection MSP-1, 3, or 9 Probe with RMA (remote mounted pre-amplifier) Maximum cable length from probe to RMA is 30 m / 100 ft of shielded cable, 18 ga. wire. See table on page 9 for cable lengths from RMA to main group. 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 leads can be made under probe cap. See table on page 9 for lengths from probe at MFA 4p. GND SHIELD BLK RMA WHT 3 2 1 NO NO
Siemens milltronics MFA 4P, ii mmmmm Table of Contents Belt Conveyors .......................................................................................................................................24 Screw Conveyors ...................................................................................................................................24 Non-Ferrous Window .........................................................................................................................25 Bucket Elevator ..............................................................................................................
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 7 mmmmm Interconnection Layout MFA 4p Circuit Board R42 R11 R10 R9 SW2 Q4 Q1 P4 RL1 RL2 C13 C5 C6 X1 X10 X100 C2 C4 C3 C16 CW CW C15 IC5 IC2 IC3 IC4 R14 R2 IC1 C1 R15 R3 R13 R1 R12 R17 R28 R43 D7 P2P1 PULSES PER MINUTE START DELAY START DELAY CAL PPM UNDERSPEED OVERSPEED P3 C41 C18 C17 C52 C40 C38 D6 D27 D26 D28 D25 D23 D22 D21 D24 R16 9 15 21 0 0 10 20 40 50 60 30 30 PPM T2 SECONDS R4 R5 R7 R45 SW3 R19 OFF S1 115V 100V 230V 200V SW1 R32 R22 SN R33 R37 R36 R35 R34 R41 R30 R31 R39 R40 R38 R26 R27 C12 C11 C7 C10 D4 D5 C9 Q10 Q9 Q7 Q8 Q3 Q2 D2 Q6 Q11 Q5 C8 R24 R18 R8 LED1 LED2 NO NONC 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 PROBE INPUT 9 9
7ML19985FM01 MFA 4p – INSTRUCTION MANUAL Page 23 mmmmm Applications Applications Bucket Elevators For chain and sprocket drive elevators, place the probe so that the gap between the bucket and the probe does not exceed 102 mm (4"). To prevent damage to the probe from eccentric bucket motion, ensure that the gap is not less than 12.5 mm (0.5&quo
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p – INSTRUCTION MANUAL Page 31 mmmmm Index Index A Ambient Temperature Range 3 Applications 23 Automatic Start Delay 11 B Belt Conveyors 24 Bucket Elevator 25 Bucket Elevators 23 C Cable length 9 Calibration 14 D Dimensions MFA 4p 5 Drive Sprocket on Rotary Feeder 26 Dynamic range 2 E End Bearing on Screw Conveyor 27 I Installation 4 Interconnection 8 Interconnection Diagram for the XPP-5 21 L Layout MFA 4p circuit board 7 M MFA 4p circuit board layout 7 operating principles 12 Operation 13 MSP-1 Mini
Siemens milltronics MFA 4P, Page 2 MFA 4p - INSTRUCTION MANUAL 7ML19985FM01 mmmmm Specifications Specifications Safety Power • 100/115/200/ 230 V AC ±15%, 50/60 Hz, 15 VA Output • 2 relays with Form C (S.P.D.T.) fail-safe contacts (relays operate in unison) Resistive Rating: • 8 A @ 250 V AC Repeatability •± 1% Temperature coefficient (setpoint variance) • 0.018%/ °C (0.01% / °F) Setpoint adjustment range • 2 to 3,000 ppm (pulses per minute): standard model • 0.15 to 15 ppm: slow speed version Dynamic range • 0 to 7,200 ppm Note: The Milltronics MFA 4p (Motion Failure Alarm) is
Siemens milltronics MFA 4P, Page 4 MFA 4p - INSTRUCTION MANUAL 7ML19985FM01 mmmmm Installation Installation Milltronics MFA 4p The MFA 4p (and RMA if applicable) must be mounted in a non-hazardous area that is clean, dry, vibration-free, within the ambient temperature range, and non-corrosive to the electronics or its enclosure. The door should be accessible for viewing and to allow calibration of the MFA 4p. Probe The probe should be mounted onto a vibration free structure using the mounting flange. The gap between probe and target should be large enough to prevent the target from damaging the probe. The probe environment must be within the probe's ambient temperature range and non-corrosive to the probe&
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 29 c.To find out if the probe is defective (non-IMA type only; i.e. MSP-1 , MSP-3, and MSP-9 ): i. Disconnect probe from pre-amp. ii. Connect an ohmmeter across the black and white leads. iii. Nominal probe impedances are as follows If impedance deviates substantially from these values, an open or short circuit condition is indicated. Maintenance The Motion Failure Alarm MFA 4p requires no maintenance: however, we recommend a program of periodic checks. If it is necessary to clean the enclosure and circuit boards: 1. First, make sure the power is disconnected at the main breaker. 2. Use a vacuum cleaner and a clean, dry paint brush. 3. Chec
Siemens milltronics MFA 4P, © Siemens Milltronics Process Instruments Inc. 2008 Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of others, and to protect the product and the connected equipment. These warning notices are accompanied by a clarification of the level of caution to be observed. Qualified Personnel: This device/system may only be set up and operated in conjunction with this manual. Qualified personnel are only authorized to install and operate this equipment in accordance with established safety practices and standa
Siemens milltronics MFA 4P, Page 10 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Wiring Connection to power: • Terminal 10 must be connected to reliable ground. • The equipment must be protected by a 15A fuse or circuit breaker in the building installation. • A circuit breaker or switch in the building installation, marked as the disconnect switch, shall be in close proximity to the equipment and within easy reach of the operator. • AC input circuit, relay circuits, min. 14 AWG copper wire • Recommended torque on terminal clamping screws, 7 in.lbs. max. WARNING: All field wiring must have insulation suitable for at least 250 V. NO NONC 1 1 2
7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 13 mmmmm Wiring The resultant line indicates the threshold tolerance of the accompanying MFA 4p electronics. For example, in FIG. A, a 100 mm (4") gap requires a minimum velocity of about 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") is possible. T
Siemens milltronics MFA 4P, Page 12 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Wiring Operating Principles 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. Pulses generated from the probe are continually compared to the adjustable setpoint. If the puls
Siemens milltronics MFA 4P, *7ml19985fm01* Rev. 1.2 www.siemens.com/processautomation Siemens Milltronics Process Instruments Inc. 1954Technology Drive, P.O. Box 4225 Peterborough, ON, Canada K9J 7B1 Tel: (705) 745-2431 Fax: (705) 741-0466 Email: [email protected] Siemens Milltronics Process Instruments Inc. 2008 Subject to change without prior notice Printed in Canada
Siemens milltronics MFA 4P, Page 14 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Wiring Although two pulses within range are required to energize the relays, as long as the frequency of the incoming pulses exceeds the setpoint frequency (or is less than that of the setpoint in the case of overspeed detection), the MFA 4p keeps the alarm relays energized. The reference generator is frequency adjustable by the pulses per minute (ppm) switch and potentiometer. The alarm relays will de-energize after two time constants of the setpoint when the frequency of the incoming puls
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 19 mmmmm Probes Standard Probe MSP-12 • Phenolic body comes with die-cast aluminum cap and zinc flange, zinc plated locknut, and neoprene gasket • See page 22 for Flange and Mounting Details • Pre-amp is potted in the probe body and comes with two 127 mm (5") long hook-up wires CAP c/w ½" NPT or PG16 CONDUIT ENTRANCE LOCKNUT MOUNTING FLANGE 2" NPSL PROBE BODY GASKET 60 mm 86 mm (2.375”) (3.375”) 187 mm 127 mm (5”) (7.375”) 7ML19985FM01.book Page 19 Wednesday, May 21, 2008 2:17 PM
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 9 mmmmm Interconnection XPP-5 with IMA (internally mounted pre-amplifier) XPP-5 cable must be run in dedicated, approved metal conduit, boxes and fittings and to procedures in accordance with all governing regulations. See table below for lengths from probe at MFA 4p. Cable length from RMA or IMA to MFA 4p Note: Refer to Interconnection Diagram for the XPP-5 (drawing number 23650131) on page 21 . Wire gauge Length in feet Length in metres 22 AWG (0.34 mm 2 )
Siemens milltronics MFA 4P, Page 18 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Probes Stainless Steel Probe MSP-9 Mounting Details • For high temperature and corrosion resistance applications • 304 stainless steel body comes with stainless steel clamp and silicone gasket • 1.5 m (5 ft.) Belden 83321 Teflon ®1 cable potted in probe • Pre-amp is mounted in an enamel painted steel Hammond 1414N4E enclosure 1. Teflon is a registered trademark of E.I. du Pont de Nemours and Company 111 mm (4.375”) 8 mm ø (0.312”) 4 PLACES CAP c/w 22 mm ø HOLE (0.875�
Page 22 MFA 4p – INSTRUCTION MANUAL 7ML19985FM01 mmmmm Applications Mounting Details 6 mm (0.25”) dia. hole for ¼ -20 nut and bolt or drill and tap, four holes on 114 mm (4.5“) BCD 6 mm (0.25”) dia. hole for ¼ -20 bolt on 114 mm (4.5”) BCD, four places 9 5 mm (3.75”) dia. probe clearance hole 133 mm (5.25”) O.D. 2” NSPL 25mm (1”) Mounting Flange APPLICABLE TO ALL PROBES
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 3 mmmmm Installation Weight • polycarbonate enclosure: 1.5 kg (3.3 lb.) • mild steel or stainless steel enclosure: 4.3 kg (9.5 lbs.) Approvals 1 •CE, CSA (C/US) , FM • EMC performance available on request Environmental • location: Indoor/outdoor • altitude: 2000 m max. • ambient temperature: –20 o C to 50 o C (–4 o F to 122 o F) • relative humidity: suitable for outdoor (Type 4X / NEMA 4X / IP65)* • installation category: II • polluti
Siemens milltronics MFA 4P, 7ML19985FM01 MFA 4p - INSTRUCTION MANUAL Page 5 mmmmm Installation Dimensions MFA 4p Type 4X / NEMA 4X / IP65 Polycarbonate Enclosure Notes: • 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. 160 mm (6.325") 131 mm (5.138") 15mm (0.59") 6 mm (0.25") 82 mm (3.225") 240 mm (9.455") 228 mm (8.975") lid screws mounting holes 4.3 mm (0.170") dia. 4 places Suitable location for conduit entrance 7ML19985FM01.book Page 5 Wednesd
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