Circuit Descriptions - Omron I537-E2-01 User Manual

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Circuit Descriptions

Refer to the numbers indicated in the diagram on the previous page.
• 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
reinforced 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 (Safety Extra Low Voltage) circuits and are separated from all other circuits
by protective separation consisting of double and reinforced insulation. These circuits may only be
interconnected with other SELV (or equivalent) circuits. These circuits can be accessible or intercon-
nected with other accessible SELV 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
insulation. These circuits cannot be accessed and must not be interconnected with any circuits which
are accessible, unless they are isolated from accessible circuits by supplemental insulation.
1. Control circuit terminals are arranged as shown below.
IMPORTANT
2. The output current capacity of the +V terminal is 20 mA.
3. Disable the stall prevention during deceleration (set parameter L3-04 to 0) when using a Braking Resis-
tor Unit. If this user parameter is not changed to disable stall prevention, the system may not stop within
deceleration time.
4. Main circuit terminals are indicated with double circles and control circuit terminals are indicated with sin-
gle circles.
5. Sequence input signals S1 to S7 are labeled for sequence connections (0 V common and sinking mode)
for no-voltage contacts or NPN transistors. These are the default settings.
For PNP transistor sequence connections (+24V common and sourcing mode) or to provide a 24-V
external power supply, refer toTable 2.11.
6. The master speed frequency reference can set to input either a voltage (terminal A1) or current (terminal
A2) by changing the setting of parameter H3-13. The default setting is for a voltage reference input.
7. The multi-function analog output is a dedicated meter output for an analog frequency meter, current
meter, voltmeter, wattmeter, etc. Do not use this output for feedback control or for any other control pur-
pose.
8. DC reactors to improve the input power factor built into 200 V Class Inverters for 22 to 110 kW and 400
V Class Inverters for 22 to 160 kW. A DC reactor is thus an option only for Inverters for 18.5 kW or less.
Remove the short bar when connecting a DC reactor to Inverters for 18.5 kW or less.
Set parameter L8-01 to 1 when using an optional braking resistor unit and braking unit. When using this,
a shutoff sequence for the power supply must be made using a thermal relay trip.
Connection Diagram
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