YASKAWA A1000 Series Quick Start Manual page 44

3 Electrical Installation
Output Terminals
Table 11 lists the output terminals on the drive. Text in parenthesis indicates the default setting for each multi-function
output.
Type No.
N.O.
MA
N.C. output
Fault Relay MB
Fault output common
MC
Multi-
M1
Function
Multi-function digital output (During run)
Digital
M2
Output
<1>
Multi-
Photocoupler output 1 (Zero speed)
P1
Function
Photocoupler output 2 (Speed agree 1)
P2
Photocoupler
Photocoupler output common
PC
Output
Pulse train output (Output frequency)
MP
Analog monitor output 1 (Output frequency)
FM
Monitor
Output
Analog monitor output 2 (Output current)
AM
Monitor common
AC
Safety
DM+ Safety monitor output
Monitor
Safety monitor output common
DM-
Output
<1> Refrain from assigning functions to terminals M1 and M2 that involve frequent switching, as doing so may shorten relay performance life.
Switching life is estimated at 200,000 times (assumes 1 A, resistive load).
<2> Connect a flywheel diode as shown in the
the circuit voltage.
Figure 31
Serial Communication Terminals
Type No.
R+
R-
MEMOBUS/Modbus
S+
Communication
<1>
S-
IG
<1> Enable the termination resistor in the last drive in a MEMOBUS network by setting DIP switch S2 to the ON position. For more information on
the termination resistor, see
44
Table 11 Control Circuit Output Terminals
Terminal Name (Function)
Figure 31 when driving a reactive load such as a relay coil. Make sure the diode rating is greater than
A
A – External power, 48 V max.
B – Suppression diode
Figure 31 Connecting a Suppression Diode
Table 12 Control Circuit Terminals: Serial Communications
Signal Name
Communications input (+)
Communications input (-)
Communications output (+)
Communications output (-)
Shield ground
Control I/O Connections on page
Function (Signal Level) Default Setting
30 Vdc, 10 mA to 1 A; 250 Vac, 10 mA to 1 A
Minimum load: 5 Vdc, 10 mA
30 Vdc, 10 mA to 1 A; 250 Vac, 10 mA to 1 A
Minimum load: 5 Vdc, 10 mA
48 Vdc, 2 to 50 mA
32 kHz (max)
-10 to +10 Vdc or 0 to +10 Vdc
0 V
Outputs status of Safe Disable function. Closed when both
Safe Disable channels are closed. Up to +48 Vdc 50 mA
B
C
YEC_common
D
C – Coil
D – 50 mA or less
MEMOBUS/Modbus communication: Use
a RS-485 or RS-422 cable to connect the
drive.
48.
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
<2>
Function (Signal Level)
RS-485/422
MEMOBUS/Modbus
communication
protocol
115.2 kbps (max.)
0 V
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