Yaskawa iQpump Micro - Manual (Page 76)

<2> Connect a suppression diode as shown in Figure 3.18 when driving a reactive load such as a relay coil. Ensure the diode rating is greater than the
circuit voltage.
<3> When set for sourcing. +5 V/1.5 kΩ or higher, +8 V/3.5 kΩ or higher, +10 V/10 kΩ or higher.
<4> When set for sinking, the external power supply should be +12 Vdc, ±5% with 16 mA or less.
A
B
C
D
A – External power, 48 V max.
B – Suppression diode C – Coil
D – 50 mA or less
Figure 3.18 Connecting a Suppression Diode
n Serial Communication Terminals
Table 3.10 Control Circuit Terminals: Serial Communications
Type No. Signal Name Function (Signal Level)
MEMOBUS/Modbus
Communication
R+ Communications input (+)
MEMOBUS/Modbus communication: Use a
RS-485 or RS-422 cable to connect the drive.
RS-485/422
MEMOBUS/
Modbus
communication
protocol 115.2 kbps
(max.)
R- Communications input (-)
S+ Communications output (+)
S- Communications output (-)
IG Shield ground 0 V
u Terminal Configuration
S1 S2 S3 S4 S5 S6 S7 HC SC H1 RP
R+ R– S+ S– IG
P1 P2 PC A1 A2 +V AC AM AC MP
MC MB MA
S1 S2 S3 S4 S5 S6 S7 HC SC H1 RP
R+ R- S+ S- IG
P1 P2 PC A1 A2 +V AC AM AC MP
MC MB MA
Figure 3.19 Removable Control Circuit Terminal Block
3.6 Control Circuit Wiring
76 YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual