Motor Overload Protection - Hitachi SJ2002 Series Instruction Manual

xiv
Fuse and Circuit Breaker Sizes
The inverter's input power wiring must include UL Listed, dual-element, 600V fuses, or
UL Listed, inverse-time circuit breakers of appropriate voltage rating for the supply.
Input
Voltage
200V
400V

Motor Overload Protection

Hitachi SJ200
on the proper setting of the following parameters:
• B012 "electronic overload protection"
• B212 "electronic overload protection, 2nd motor"
Set the rated current [Amperes] of the motor(s) with the above parameters. The setting
range is 0.2 * rated current to 1.2 * rated current.
WARNING: When two or more motors are connected to the inverter, they cannot be
protected by the electronic overload protection. Install an external thermal relay on each
motor.
Motor Output
kW HP
0.2 1/4 SJ200-002NFE(F)2/NFU2
0.4 1/2 SJ200-004NFE(F)2/NFU2
0.55 3/4 SJ200-005NFE(F)2
0.75 1 SJ200-007NFE(F)2/NFU2
1.1 1 1/2 SJ200-011NFE(F)2
1.5 2 SJ200-015NFE(F)2/NFU2
2.2 3 SJ200-022NFE(F)2/NFU2
3.7 5 SJ200-037LFU2
5.5 7 1/2 SJ200-055LFU2
7.5 10 SJ200-075LFU2
0.4 1/2 SJ200-004HFE(F)2/HFU2
0.75 1 SJ200-007HFE(F)2/HFU2
1.5 2 SJ200-015HFE(F)2/HFU2
2.2 3 SJ200-022HFE(F)2/HFU2
3.0 4 SJ200-030HFE(F)2
4.0 5 SJ200-040HFE(F)2/HFU2
5.5 7 1/2 SJ200-055HFE(F)2/HFU2
7.5 10 SJ200-075HFE(F)2/HFU2
inverters provide solid state motor overload protection, which depends
2
Ampere Rating for
Inverter Model
Fuse or Breaker
10
10
10
15
15
20 (single ph.)
15 (three ph.)
30 (single ph.)
20 (three ph.)
30
40
50
3
6
10
10
15
15
20
25