YASKAWA Varispeed E7 Instruction Manual And Parameter Description page 59

No.
Type
RS-
485/
422
* 1. The default settings are given for terminals S3 to S7. For a 3-wire sequence, the default settings are a 3-wire sequence for S5, multi-step speed setting 1
for S6 and multi-step speed setting 2 for S7.
* 2. Do not use this power supply for supplying any external equipment.
* 3. When driving a reactive load, such as a relay coil with DC power supply, always insert a flywheel diode as shown in
Jumper CN15 and DIP Switch S1
The jumper CN 15 and DIP switch S1 are described in this section.
The functions of DIP switch S1 and jumper CN15 are shown in the following table.
Name
S1-1
S1-2
CN15-
CH1*
CN15-
CH2*
*CN15 is not available on the standard terminal board. An optional terminal board which has this jumper is available.
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2
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Table 2.11 Control Circuit Terminals with default settings (Continued)
Signal Name
R+
MEMOBUS communica-
tions input
R-
S+
MEMOBUS communica-
tions output
S-
IG Signal common
Coil
External power:
30 VDC max.
Fig 2.12 Flywheel Diode Connection
S1
OFF
ON
V I
CN15
CH1
CH2
CH1
CH2
I V
Fig 2.13 Jumper CN15 and DIP Switch S1
Table 2.12 DIP Switch S1 and jumper CN15
Function
RS-485 and RS-422 terminating resis-
tance
Input method for analog input A2
Multifunction analog output FM voltage/
current switch
Multifunction analog output AM voltage/
current switch
Function
For 2-wire RS-485, short R+ and S+ as well
as R- and S-.
–
Flywheel diode
1 A max.
Terminating resistance
Analog input A2 switch
: Factory settings
Analog output switch*
Voltage output
Current output
S1
CN15
OFF: No terminating resistance
ON: Terminating resistance of 110 Ω
V: 0 to 10 V (internal resistance: 20 kΩ)
I: 0/4 to 20 mA (internal resistance: 250 Ω)
I: Current output
V: Voltage output
I: Current output
V: Voltage output
Signal Level
Differential input, PHC
isolation
Differential input, PHC
isolation
–
Fig 2.12.
The rating of the flywheel diode
must be at least as high as the
circuit voltage.
Note: Refer to Table 2.12 for S1
functions.
Setting