M20 Shaft Power Monitor PRODUCT TRAINING Topics 1. What is an M20 Shaft Power Monitor 2. How does it measure Shaft HP 3. Benefits of Shaft Power measurement
4. Competing technologies 5. Features 6. M20 Installation and Setup 7.
Limitations 8. Conclusion Fundamentals More than 500,000 Emotron monitors installed worldwide Emotron has been manufacturing Load Monitors longer than any other company 62% of Emotrons Monitors are installed to Pumps The only monitor to measure shaft power (BHP) The only monitor to have automatic setup (AutoSet) What is an M20?
What is an M20? An electronic system that monitors the Shaft HP of a motor and provides protection against abnormal process conditions using the motor as a sensor To detect abnormal conditions here We measure shaft power here How does the M20 measure Shaft HP? SHAFT POWER (HP) MOTOR POWER LOSSES
MOTOR POWER IN SHAFT POWER = POWER IN POWER LOSSES Motor Losses Where do the losses come from and how big are they? Magnetic losses Fan (Windage) Electrical losses Many motors are only 70 to
80% efficient due to these losses. Bearing friction The M20 continually calculates these losses and subtracts them from the measured motor input power. Benefits of measuring Shaft HP? Manufacturers typically express load data in BHP not Input Power, e.g., Pump Curve The varying losses of the motor are discounted Improved accuracy & reliability
Protection parameters are set against the working load only The HP displayed is the actual HP required by the application The displayed BHP can be useful when looking at the pump curve Other features Displayed Data Window 01 Motor Load Window 02 Motor Supply Voltage Either: HP HP% Window 03 Motor Operating Amps
kW kW% Window 04 Locks all settings Other features Analog Output Motor Power 100% Analog Output 20mA 50%
4mA Can be set for either: 0-20 mA 4-20 mA 20-0 mA 20-4 mA Competing technologies Examples of technologies available to measure Motor Load Load Controls PMP-25 Integra Motor Minder
Unipower HPL 420 Current Monitoring (Integra) Pros Simple Low Cost Cons Only Effective if Motor is Loaded at 70-80% Better for Overload than Underload AMPS AMPS LOAD 60-70%
Motor Input Power Monitoring Pros Accurate measurement of load to motor Detects Overload and Underload Works well on lightly loaded motors Cons Does not consider motor losses Does not determine actual BHP Load Controls is mounted externally and can lead to unintended tampering AMPS VOLTS
POWER LOAD M20s key features Shaft power measurement* Four levels of protection* Autoset* Derives supply from Line Voltage* Electronic locking of parameters* Smallest footprint of any power monitor available* Readout of HP, %HP, kW, %kW, Volts and Amps* Programmable relay configurations Just three models cover all motor voltages up to 690 VAC
Medium voltage (up to 6900V) applications with special Transformer* Programmable analogue signal proportional to the motors shaft power* Motors up to 800 HP can be monitored Remote Reset / AutoSet / Pre-Alarm blocking input * * Unique features Reliable and simple protection of a Mag Drive Pump Shaft Power 90% 74%
Time Response Delay Examples of abnormal pumping conditions detected by M20 Closed suction valve Underload Dry running Underload (or overload)* Dead Heading Underload (or overload)* Cavitation Underload & Overload Blocked impeller Overload Bad Bearings Overload Worn Impeller Underload Plugged Filter Underload (or overload)*
* Pump specific Typical pump types that can be monitored Mag Drive Lobe Centrifug al Mag Drive Centrifugal Gear (Positive Displacement)
Progressive Cavity How to determine Part Numbers M20 There are just three M20 models to choose from Description / Motor Supply Voltage Part Number M20 / 1 x 100-240 and 3 x 100-240 VAC 01-2520-20
M20 / 3 x 380-500 VAC 01-2520-40 M20 / 3 x 525-690 VAC 01-2520-50 Current Transducers There are just four CTs to choose from Motor FLA 0.1 10 Amps 10.1 25 Amps
25.1 50 Amps CTM 010 CTM 025 CTM 050 CTM 100 X X X 50.1 100 Amps
For applications that are greater than 100 Amps FLA, please contact H2flow Controls X M20 - Mounting options NEMA 4X Enclosure Note: When the M20 is installed in the NEMA 4X enclosure, the Current Transducer cannot be installed more than 6 cable feet from it M20 - Mounting options
Panel Mount Kit M20 electrical installation START Control Voltage R1 (terminal 7) = Main alarm for overload and / or underload STOP K1 Auxiliary Contact Analogue output: 4 - 20 mA 20 4 mA 0 20 mA
20 0 mA (Programmable) 1 2 3 4 01 5 6 7
8 R2 (terminal 8) = Pre-Alarm for overload and / or underload Remote Reset / AutoSet 35 % Pre-Alarm 9
11 13 Control Voltage common K1 (Motor Starter) Current Transformer L1 L2 L3 M 3~
Setting up a M20 . M20 - Set up 1. Set the unit of measurement (HP, HP%, kW or kW%) 2. Set the M20s function 3. Program the motor HP and Full Load amps 4. Set the motor start delay 5. Set the trip response delay 6. Set the M20 for single or 3 phase operation 7. Set up the relay logic 8. Start the pump and apply normal load 9. Press Autoset 10. Adjust trip points manually if required
Step 1. - Set the unit of measurement: Options : HP %HP HP % Auto Set Rese t
+ Next Enter kW %kW Press these two buttons simultaneously until the desired unit of measurement is displayed. Step 2. - Set the M20s function: Options:
Overload with Pre-Alarm 05 Underload with Pre-Alarm Overload & Underload with Pre-Alarm Note: For most Centrifugal Pumps, it is best to set the M20 for Underload with Pre-Alarm In Window 05, select the monitors function: Overload with Pre-Alarm Underload with Pre-Alarm Overload & Underload
With Pre-Alarms Step 3. - Set the Motors HP rating: 5.0 41 From the motors nameplate, set in Window 41 - the motors HP rating Step 4. - Set the Motors Full Load Current: 42
6.5 From the motors nameplate, set in Window 42 - the motors Full Load Current Step 5. - Set the Motor Start Delay timer: % Power 31 time Start Delay (31) In Window 31, set the motors start delay timer:
(adjustable from 1 to 999 seconds) 2.0 Step 6a. - Set the Min Alarm Response Delay timer: Alarm level (Window 14) 34 3.0 Alarm
Min Alarm Response Delay (34) In Window 34, set the Min Alarm Response delay timer: (adjustable from 0.1 to 90 seconds). Once the load drops below the alarm set point, this timer will start. At the end of the delay, the M20s main alarm relay will trip. For most Mag Drive Centrifugal Pumps, a time of 2 to 3 seconds is reasonable. Step 6b. - Set the Max Alarm Response Delay timer: Alarm Alarm level (11) 32
3.0 Max Alarm Response Delay ( 32) In Window 32, set the Min Alarm Response delay timer: (adjustable from 0.1 to 90 seconds). Once the load drops below the alarm set point, this timer will start. At the end of the delay, the M20s main alarm relay will trip. For most Mag Drive Centrifugal Pumps, a time of 2 to 3 seconds is reasonable. Step 7. - Set M20 for Single or Three Phase Motor Supply: 43 3
PH In Window 43, set the M20 to operate on either a single or 3 phase supply Step 8a. - Set the R1 to Latched or Unlatched: 61 ON In Window 61, set R1 to either Latched (ON) unlatched (OFF). For most control wiring configurations, this should be set to (ON). Step 8b.
- Set the Relay configuration (R1): 63 NC In Window 63, set R1 to either normally open (NO) or normally closed (NC). Step 8c. - Set the Relay configuration (R2): 64 NC
In Window 64, set R2 to either normally open (NO) or normally closed (NC) Step 9. - Activate the AutoSet procedure: a) Start the pump b) Run the Pump with all valves open and the in a normal condition. Press the AutoSet key for 3-seconds until the word Set appears in the display Step 10. - Manually adjust Alarm set points if necessary:
a) Create an abnormal condition, e.g., close a suction valve and confirm an underload alarm is activated. b) If necessary, manually adjust the Alarm levels. Window 14 is the Main Underload Alarm level. Window 13 is the Pre-Alarm Underload level. Pre-Alarm O/L Main O/L Alarm Summary AutoSet AutoSet
Margin Margin (22) Margin (21) AutoSet AutoSet Pre-Alarm U/L Main % Power
U/L Alarm Max Main Alarm (11) Max Pre-Alarm (12) AutoSetLevel Min Pre-Alarm (13) Min Main Alarm (14) time Main Alarm (R1) Start Delay (31)
Response Delay Min Response Delay Max (34) (32) Pre Alarm (R2) (24) Margin (23) M20 Limitations Application must be driven by an AC Induction Motor Monitoring VFD driven applications must be viewed
with care Motors larger than 800 HP cannot be monitored A M20 must be used for each motor M20 must be installed within 6 feet of Current Transducer M20 Conclusion Most advanced load monitor available Smallest load monitor available Only monitor to offer shaft power measurement Only monitor to offer Autoset Emotron has supplied more monitors than any other company More than 500,000 Emotron monitors in the market Emotron monitors have been around longer than any other monitors
H2flow Contact Information Technical: Inside Sales / Ordering Ken Schmanski Order Status Carol McKenzie Rich Griffith [email protected]
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