Circuit Descriptions - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Circuit Descriptions

Refer to the numbers indicated in
These circuits are hazardous and are separated from accessible surfaces by protective separation.
These circuits are separated from all other circuits by protective separation consisting of double and rein-
forced insulation. These circuits may be interconnected with SELV (or equivalent) or non-SELV circuits,
but not both.
Inverter supplied by four-wire-system source (neutral grounded)
These circuits are SELV circuits and are separated from all other circuits by protective separation consi-
sting of double and reinforced insulation. These circuits may only be interconnected with other SELV (or
equivalent) circuits.
Inverter supplied by three-wire-system source (ungrounded or corner grounded)
These circuits are not separated from hazardous circuits by protective separation, but only with basic insu-
lation. These circuits must not be interconnected with any circuits which are accessible, unless they are
isolated from accessible circuits by supplemental insulation.
IMPORTANT
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2
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Fig 2.2.
1. Control circuit terminals are arranged as shown below.
2. The output current capability of the +V terminal is 20 mA.
Disable the stall prevention during deceleration (L3-04 = 0) when using a Braking Option. If this user
constant is not changed to disable stall prevention, the system may not stop within set deceleration time.
3. Main circuit terminals are indicated with double circles and control circuit terminals are indicated with sin-
gle circles.
4. The wiring of the digital inputs S1 to S7 is shown for the connection of contacts or NPN transistors (0V
common and sinking mode). This is the default setting.
For the connection of PNP transistors or for using a 24V external power supply, refer to
5. The master speed frequency reference can be input either at terminal A1 or at terminal A2 by changing
the setting of parameter H3-13. The default setting is terminal A2.
6. DC reactors to improve the input power factor are built into 200 V Class Inverters from 22 up to 110 kW
and 400 V Class Inverters from 22 up to 300 kW. A DC reactor is an option only for Inverters of 18.5 kW
or less. Remove the short circuit bar when connecting a DC reactor.
Table 2.13.