3 Electrical Installation
YASKAWA ELECTRIC TOEP C710616 33A YASKAWA AC Drive L1000A Quick Start Guide 15
Control Circuit Terminal Functions
NOTICE: The terminals HC, H1, H2 are used for the Safe Disable function. Safe Disable can be used to enable/disable the drive. If
special requirement are fulfilled, it can also be utilized for reducing the number of motor contactors to one. Refer to Safe Disable Input
Function on page 41 for details. Always remove the wire link between HC, H1, or H2 when using Safe Disable.
NOTICE: The wiring length to terminals HC, H1 and H2 should not exceed 30 m.
NOTICE: When connecting a reactive load such as a relay coil to a photo coupler output, attach a flywheel diode to the load (relay coil)
like shown below. Ensure the diode rating is greater than the circuit voltage.
Type No. Terminal Name (Function) Function (Signal Level) Default Setting
Digital Inputs
S1 Up Command (Closed: Up, Open: Stop)
Photocoupler
24 Vdc, 8 mA
Use the wire link between terminals SC and SN or between SC and
SP to select sinking or sourcing, and to select the power supply.
S2 Down Command (Closed: Down, Open: Stop)
S3 Multi-function input 3 (Nominal Speed)
S4 Multi-function input 4 (Inspection Operation)
S5 Multi-function input 5 (Intermediate Speed 1)
S6 Multi-function input 6 (Leveling Speed)
S7 Multi-function input 7 (Not used)
S8 Multi-function input 8 (Not used)
Digital Input
Power Supply
SC Multi-function input common Photocoupler, 24 Vdc, 8 mA
Use the wire link between terminals SC and SN or between SC and
SP to select sinking or sourcing, and to select the power supply.
SN 0 V
SP +24 Vdc
Safe Disable
Inputs
H1 Safe Disable input 1 24 Vdc, 8 mA
One or both open: Drive output disabled
Both closed: Normal operation
Internal impedance: 3.3 kΩ
Off time of at least 1 ms
Set the S3 jumper to select sinking or sourcing, and to select the
power supply.
H2 Safe Disable input 2
HC Safe Disable function common Common for the Safe Disable function
Analog Inputs
+V Power supply for analog inputs 10.5 Vdc (max. allowable current 20 mA)
–V Power supply for analog inputs –10.5 Vdc (max. allowable current 20 mA)
A1 Multi-function analog input 1 (Speed Reference Bias) –10 to 10 Vdc, 0 to 10 Vdc (input impedance: 20 kΩ)
A2 Multi-function analog input 2 (Not used) –10 to 10 Vdc, 0 to 10 Vdc (input impedance: 20 kΩ)
AC Analog Input common 0 V
E (G) Ground for shielded lines and option cards –
Fault Relay
MA N.O. output
30 Vdc, 10 mA to 1 A; 250 Vac, 10 mA to 1 A
Minimum load: 5 Vdc, 10 mA
MB N.C. output
MC Fault output common
Multi-Function
Relay Output
M1 Relay output 1 (Brake Control)
M2
M3 Relay output 2 (Output Contactor Control)
M4
M5 Relay output 3 (Drive Ready)
M6
Multi-Function
Photocoupler
Output
P1 Photocoupler output 1 (During frequency output 2)
Photocoupler output 48 Vdc, 2 to 50 mA
C1
P2 Photocoupler output 2 (Not used)
C2
Monitor Output
FM Analog monitor output 1 (Output speed) –10 to +10 Vdc, 0 to +10 Vdc
AM Analog monitor output 2 (Output current)
AC Monitor common 0 V
Safety Monitor
Output
DM+ Safety monitor output Outputs status of Safe Disable function. Closed when both Safe
Disable channels are closed. Up to +48 Vdc 50 mA.
DM– Safety monitor output common