9 Monitoring
9.6.3 Load Meter Output Example
9-16
9.6.3
Load Meter Output Example
The following example uses the UAKAJ-22C single-winding spindle motor and shows the load meter output
calculations.
If the motor output is 26 kW when the spindle motor is rotating at 3,000 min
-1
, the load meter monitor value
for each load meter base setting is as follows:
• Pn01C.0 = 0: Data is output with the maximum motor output at 120%.
Load meter = (26 kW
÷
37 kW)
×
120% = 84.3% = 843(0.1%) = 34B hex
• Pn01C.0 = 1: Data is output with the maximum motor output at 100%.
Load meter = (26 kW
÷
37 kW)
×
100% = 70.3% = 703(0.1%) = 2BF hex
• Pn01C.0 = 2: Data is output with the rated short-term motor output (50% ED) as the 100% output.
Load meter = (26 kW
÷
22 kW)
×
100% = 118.2% = 1182(0.1%) = 49E hex
• Pn01C.0 = 3: Data is output with a continuous motor rated output of 100%.
Load meter = (26 kW
÷
18.5 kW)
×
100% = 140.5% = 1405(0.1%) = 57D hex
UAKAJ-22C Output Characteristic
P
m
P
1
P
2
Base speed
Motor speed [min
-1
]
(user-specified)
Speed [min
-1
]
Pn01C.0 = 2: Data is output with the rated
short-term motor output at 100%.
Pn01C.0 = 1: Data is output with the maximum
motor output at 100%.
*Perform the same calculations
when Pn01C.0 is 0 or 3.
When Pn01C.0 is set to 2, then
Load ratio = (Pm ÷ P2) ×100 [%].
The load meter value for the specified motor output
is calculated as follows
When Pn01C.0 is set to 1:
Load ratio = (Pm ÷ P1) × 100 [%].
Rated maximum
short-term output
Motor output [kW]
(user-specified)
Maximum output
Output [kW]
37
22
1500
7000
4000
21.1
18.8
15.8
6000
18.5
Output (kW)
Continuous rating
Motor speed [min
-1
]
10 second rating
50% ED rating