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Low Voltage Wiring for Control Circuit Terminals
Low voltage wiring must be provided in accordance with the NEC (National Electric Code), the CEC (Canadian
Electric Code, Part I), and any additional local codes. The NEC class 1 circuit conductor is recommended. Use the
UL approved class 2 power supply for external power supply.
Table 4.20 Power Supply Used for Control Circuit Terminals
Input/Output
Digital inputs
Analog input
Analog output
Safe disable Input
Open-collector output
Serial communication input/output
24 V external power supply
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Drive Motor Overload and Overheat Protection
The drive motor overload and overheat protection function complies with the NEC (National Electric Code) and
the CEC (Canadian Electric Code, Part I).
Set the Motor Rated Current and L1-01 to L1-04 [Motor Overload Protection Select] properly to enable motor
overload and overheat protection.
Set the motor rated current with E2-01 [Motor Rated Current (FLA)].
E2-01: Motor Rated Current (FLA)
No.
Name
(Hex.)
E2-01
Motor Rated Current
(FLA)
(030E)
Note:
• If parameter E2-01 < E2-03 [Motor No-Load Current] is set, oPE02 [Parameter Range Setting Error] will be detected.
• The units for the default setting and setting range vary depending on the model of the drive.
–2003 to 2033, 4002 to 4018: 0.01 A units
–2047 to 2415, 4024 to 4605: 0.1 A units
The value set for E2-01 becomes the reference value for motor protection and the torque limit. Enter the motor
rated current as shown on the motor nameplate. The value of E2-01 is automatically set to the value input for
"Motor Rated Current" by the Auto-Tuning process.
L1-01: Motor Overload (oL1) Protection
No.
Name
(Hex.)
L1-01
Motor Overload
(oL1) Protection
(0480)
L1-01 sets the overload protection function for the motor.
Cooling capability varies depending on the speed control range of the motor. Select motor protection using an
electronic thermal protector that matches the allowable load characteristics of the motor being used.
The drive has overload protection for the motor using an electronic thermal protector. The electronic thermal
protector of the drive calculates motor overload tolerance based on output current, output frequency, motor
YASKAWA ELECTRIC SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
Terminal Sign
S1 to S10, SN, SC, SP
A1 to A3, AC, +V, -V
FM, AM, AC
H1, H2, HC
P1, C1, P2, C2
D+, D-, AC
PS, AC
Description
V/f
CL-V/f
OLV
CLV
AOLV
Sets the motor rated current in amperes.
Description
V/f
CL-V/f
OLV
CLV
AOLV
Enables or disables the motor overload protection using electronic thermal
protectors.
4 Standards Compliance
Power Supply Specifications
The LVLC power supply in the drive is used.
Use the UL approved class 2 power supply
for external power supply.
The LVLC power supply in the drive is used.
Use the UL approved class 2 power supply
for external power supply.
The LVLC power supply in the drive is used.
The LVLC power supply in the drive is used.
Use the UL approved class 2 power supply
for external power supply.
Use the UL approved class 2 power supply.
The LVLC power supply in the drive is used.
Use the UL approved class 2 power supply
for external power supply.
Use the UL approved class 2 power supply.
Default
(Range)
Determined by o2-04
(10% to 200% of the
drive rated current)
Default
(Range)
Determined by A1-02
(0, 3, 6)
275
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