Chapter 1 Motor Evaluation Function (Option); Names And Functions Of Parts Of The Motor Evaluation Function - YOKOGAWA WT3002E User Manual

Chapter 1 Motor Evaluation Function (Option)
1.1 Names and Functions of Parts of the Motor
Evaluation Function
Front Panel
YOKOGAWA
Rear Panel
Functional Description
Types of Measurement Functions
Limitations by Measurement Modes
IM WT3001E-51EN
ELEMENT
ESC
1 2
3 4
ELEMENT
ALL
COMPEN
WIRING
INPUT INFO.
RESET
PAGE
SCALING LINE FILTER
MOTOR FREQ
SET FILTER
HRM SET MEASURE
CURSOR
FILE IMAGE SAVE
MENU
PRINT MISC
MENU
SHIFT+SCALING (MOTOR SET) key (option)
Sets items that are required in the motor evaluation such as torque,
number of rotations, and motor output.
By using the motor evaluation function (option), the rotating speed, torque, and output
of a motor can be determined from the signal that is proportional to the rotating speed
of the motor, and the signal received from a torque meter, which is proportional to the
motor's torque. The signal applied from the revolution sensor or torque meter to this
instrument can be selected from analog signal (DC voltage) or pulse signal. In addition,
the synchronous speed and slip of a motor can be determined by setting the motor's
number of poles. Furthermore, the active power and frequency that are measured by this
instrument and the motor output can be used to compute the motor efficiency and the
total efficiency.
Measurement functions consists of Speed (rotating speed), Torque, Pm (motor output
or mechanical power), SyncSp (synchronous speed), and Slip. For details on the
determination of the measurement functions, see section 1.10. Set equations for the
motor efficiency ((Pm)/(PΣA) × 100) and total efficiency ((Pm)/(PΣB) × 100) according to
the procedures in section 5.7 in the User's Manual IM WT3001E-01EN.
Measurement functions of the motor evaluation function cannot be measured in wide
bandwidth harmonic measurement, IEC harmonics measurement, voltage fluctuation and
flicker measurement, and cycle-by-cycle measurement modes.
VOLTAGE RANGE CURRENT RANGE EXT SENSOR
SENSOR RATIO
MEASURING MEASURING
MODE AUTO MODE AUTO
RMS MEAN DC RMEAN RMS MEAN DC RMEAN
DISPLAY ITEM & ELEMENT
REMOTE
SET
NUMERIC WAVE U / I / P UPDATE HOLD LOCAL
RATE
WP/q/
OTHERS SINGLE
TIME
CAL
PAGE ITEM FORM USER ELEMENT INTEG START STOP SHIFT
LOWER ITEM LOWER FORM USER SET ALL
AVG
SYNC SOURCE
NULL
STORE
STORE SET
HELP
TORQUE
± 20V MAX
SPEED
± 20V MAX
42V pk MAX
Torque signal input connector (TORQUE)
(option)
Receives signals from torque meters when evaluating
motors.
Revolution signal input connector (SPEED)
(option)
Receives signals from revolution sensors when evaluating
motors.
1
2
3
4
5
6
7
8
9
10
11
12
13
Index
1-1