Hitachi SJ2-CO instruction manual Using RFGRamp Function Generator, Rfg

CHAPTER5 CANOPEN COMMUNICATION FUNCTION

5.1.9 Using RFG(Ramp Function Generator)

Purpose of using RFG is selecting RAMP (frequency generator) sources. The method of selecting

RAMP sources is using STW. It is shown diagram below.

vl_velocity_acceleration

(#6048)

vl_velocity_deceleration

(#6049)

Index 1

Conv. Hz

Index 2

Index 1

Index 2

RFG usr ref (STW:bit6)

Cal.

Δspeed

Δtime

RFG unlock (STW:bit5)

RFG		RFG enable (STW:bit4)
	HOLD	0

		0	0
vl_target_velocity	Conv. Hz		1
(#6042)

F002/F003

A004

		1
1
		0	HALT (STW:bit8)
vl_velocity_min_max_amount	Index 1	Limiter	0
				Conv.
(#6046)
	Index 2		1	RPM
		A061/A062

INV

vl_velocity_demand (#6043)

vl_velocity_effort

(#6044)

If you use RFG, Please set parameter shown below.
B021(Overload restriction operation mode)	00(OFF)
B130(Over-Voltage LADSTOP enable)	00(OFF)
B140(Over-current trip suppression)	00(OFF)

In purpose of setting parameter above, these parameters are automatically decelerated output velocity in condition of these functions. It is not satisfied that specifications of CANopen. In selecting RFG mode, it doesn’t work the functions Overload restriction, Over-Voltage LADSTOP and Over-current trip suppression. When you want to use these functions, please don’t select RFG mode.

17