YASKAWA A1000 Series Quick Start Manual page 49

Sink/Source Mode, External Power Supply
When using an external voltage source for controlling the digital inputs, set jumper S3 as shown in
inputs can be used for either sinking or sourcing.
Figure 41
+24 V
Source Mode (+24 V Common) External Power Supply
Power Supply Inputs Instead of the Safe Disable Feature
Refer to Figure 42 to wire the input terminals for an external power supply instead of the Safe Disable feature.
Figure 42
+24 V
Using the Pulse Train Output
■
The pulse train output terminal MP can either supply power but can also be used with external power supply. Peripheral
devices should be connected in accordance with the specifications listed below. Failure to do so can cause unexpected
drive operation, and can damage the drive or connected circuits.
Using Power from the Pulse Output Terminal (Source Mode)
The high voltage level of the pulse output terminal depends on the load impedance.
Load Impedance R
Note: The load resistance needed in order to get a certain high level voltage V
Figure 43
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
YEC_common
S7
S8
IP24 V
SC (24 V)
Figure 41 Sink/Source Mode, External Power Supply
S8
IP24 V
SC (24 V)
H1
H2
HC
YEC_common
Source Mode
Figure 42 Power Supply Inputs Instead of the Safe Disable Feature
(kΩ)
L
1.5 kΩ
4 kΩ
10 kΩ
MP
AC
Figure 43 Pulse Output Connection Using Internal Voltage Supply
S7
S8
SC
+24 V
Sink Mode (0 V Common) External Power Supply
S8
SC
+24 V
H1
H2
HC
Sink Mode
Output Voltage V
can be calculated by:
MP
Load Impedance
V
R
MP
L
3 Electrical Installation
Figure 41. Here, the
IP24 V
(24 V)
IP24 V
(24 V)
(V) (insulated)
MP
5 V
8 V
10 V
R = V 2 / (12 - V )
L MP MP
3
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