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Isolated Modbus Control Mode: Using an
RS-485 2-wire Modbus communications link, Stratus II
can control motor speed, acceleration, deceleration and
direction.
Modbus RTU Protocol
Baud Rate: Settable (default is 9600)
Word Length: 8
Parity: None
Stop Bits: 1
MODBUS ID: 1-63
Setup for Modbus Control:Use switch SW2 to select a
unique ID number between 1 and 63 on your Modbus
network. To set an ID number, turn #7 OFF and turn ON
any number of switches 1-6 on SW2 and add up their
associated Value see chart below. Example: turning
ON 2, 4 and 6 would set the ID number by 2+8+32=42.
Connecting to a Modbus Network:Use an RS-485 2-wire
twisted pair cable, connected to the Modbus network
(refer to wiring diagram for proper pin out).
Register Definitions:
40001 Run Control: Enter the desired control method.
Only one control method may be selected at a time.
Drive will use the 1st control bit set.
40002 Target Frequency: Set the desired output
frequency when in Modbus mode. In all other modes it is
read only and displays target output frequency.
40003 Target Speed: Set the desired output % when
in Modbus mode. In all other modes it is read only and
displays target output percentage.
40004 Output Frequency: Displays the current output
of the drive in Hertz.
40005 Output Speed: Displays the current output of
the drive in %.
40006 Control value: Displays a representation of the
analog control in % full or Temp °C.
40007 Alarms: Displays all active alarms. See table 4.
40008 Bus Voltage: Displays the DC bus voltage in
Volts. (1V res)
40009 Bus Current: Displays the DC bus current in
Amps. (0.1A res)
40010 Temperature: Displays the temperature of the
inverter module in °C. (1°C res). 100°C shutdown.
40011 Revision: Displays the firmware revision.
40012 Modbus ID: Displays the Modbus ID.
40013 Configuration: Used to configure specific
control preferences.
40014 Ramp Up Rate: Enter the desired increase in
output frequency rate. (1Hz/sec res)
40015 Ramp Down Rate: Enter the desired decrease
in output frequency rate. (1Hz/sec res)
40016 Current Limit: Enter the desired output current
fault level (0-100) (.1A res). Any current beyond this
setting will cause Stratus II to lock-up and set an alarm.
Power must be cycled to clear the alarm.
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40017 Startup Run: Enter the configuration to be
loaded into Register 40001(Run Control) at startup.
40018 Startup Frequency: Enter the desired
frequency output at startup. Modbus control only.
40019 Max Frequency Output: Enter the desired
maximum frequency output when in analog control
modes.
40020 Idle Frequency Output: Enter the desired Idle
frequency output when in analog control modes.
40021 Contact Closure Frequency: Enter the desired
output frequency when CC is activated. Non-Isolated
digital control.
40022 Max Control %: Used in 0-5V, 0-10V, 4-20mA,
and Pot control. It sets the analog control percentage
point of where the Max Frequency output occurs.
40023 Idle Control: The Idle control register is used in
0-5V, 0-10V, 4-20mA, and Pot control. It sets the Idle
frequency control percentage. Refer to 40013.
40024 Alarm Control: The alarm control register is
used in 0-5V, 0-10V, 4-20mA, and Pot control. It sets the
alarm control percentage. 0=Disabled. Refer to 40013.
40025 Max Temperature: The max temperature
register is used in Thermistor control. It sets the
Temperature threshold for max frequency output. Refer
to 40019 for setting Max Freq output value.
40026 Idle Temperature: Used in thermistor control
mode to set the temperature threshold for idle frequency.
Refer to register 40020 for setting Idle Freq value.
40027 Alarm Temperature: Used in thermistor control
mode to set the temperature threshold for an alarm.
40028 Baud Rate: Sets the Modbus communication
Baud rate. Range from 2,400 500,000 (100 Baud Res).
*Recovery: Setting SW2 for ID 0 will set Baud to 9600.
40029 PWM Frequency: Sets the sine wave
modulation frequency. Range from 2,000 20,000 Hz.
Default = 16,000Hz
40030 EEPROM Save: Setting this register to a 1
saves the control variables into EEPROM. EEPROM
Save is also used to set variables to default.
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