Omron 3G3RX - 4 Parameter List; Parameter Group D: Monitors

RX Quick Start Guide 35
PARAMETER LIST
To use this function remove the J51 connector cable connected between terminals Ro and To, and connect the cable from main
terminal P to Ro and from N to To. The cable size should be 0.75mm
2
or larger.
When the DC voltage of the inverter goes down to b051 level, inverter decrease the output frequency by a amount set in b054 to
force the motor to regenerate energy that is used to increase the DC bus value. Then deceleration continues at the rate set in b053
until the upper limit b052 is reach where the deceleration ramp stops until the DC bus drops again. This operation is repeated
until the motor is totally stopped or there is not enough regeneration from the motor so DC bus goes below the undervoltage
level.
4 PARAMETER LIST
The PDU (Process Data Unit) register number are addressed starting at zero. Therefore register numbered “0012h” addressed as
“0011h”. Register address value (transmitted on Modbus line) is 1 less than the Register number of the table
4.1 Parameter group D: Monitors
Parameter Parameter name Description
b050 Selection of non-stop function at
momentary power interruption
00: OFF (Disabled)
01: V-Cnst (STOP) (Enabled (deceleration stop))
02: NS1 (Enabled (without recovery))
03: NS2 (Enabled (with recovery))
b051 Starting voltage of non-stop function at
momentary power interruption
0.0 to 1000.0 V
b052 Stop deceleration level of non-stop function
at momentary power interruption
0.0 to 1000.0 V
b053 Deceleration time of non-stop function at
momentary power interruption
0.01 to 3600.00 s
b054 Deceleration starting width of non-stop
function at momentary power interruption
0.00 to 10.00 Hz
Function code Function name Monitoring and setting items Units Modbus
Register No.
d001 (high) Output frequency monitor 0.00 to 400.00 Hz 1001h
d001 (low) 1002h
d002 Output current monitor 0.0 to 9999.0 A 1003h
d003 Rotation direction monitor FWD: Forward
STOP: Stop
REV: Reverse
- 1004h
d004 (high) PID feedback value monitor 0.00 to 999000.00 - 1005h
d004 (low) 1006h
b052 > Main circuit DC voltage at recovery
Main circuit P-N voltage
Vpn (V)
Time
Time
Output
frequency
(Hz)
DC voltage kept constant
b050 = 02, 03
(Deceleration stop)
Power recovery
Main circuit DC voltage
b052
b051
Note: The main circuit DC voltage level, while the function is running, may fall below the b052 set value depending
on the proportional gain and integral time settings.
Power recovery
Main circuit P-N voltage
Vpn (V)
Time
Time
Output
frequency
(Hz)
DC voltage kept constant
b050 = 03 (Operation)
b050 = 02
(Deceleration stop)
Main circuit DC voltage
at power recovery
b052
b051
b052 < Main circuit DC voltage at recovery
Power recovery