Yaskawa Drive Simulator - Manual (Page 2)

TM.AFD.Simulator Page 2
Figure 1: Simulator unit with no control card installed
1. Introduction:
This control board tester and variable-power-factor load emulator allows the user to test all the basic and advanced
functions of above mentioned control cards without any need for actual drive power supply sections, motor stand, load
stand and power stages.
All of the required signals to operate the cards are simulated through DC and AC voltages and currents, adjustable by
potentiometers and switches. LED’s for digital and VU meters for analog signals monitor all the control and user
outputs. Yet all the signals are provided at test points for external access. PC serial 9-pin connector can be routed to
card’s RS232, RS485 or RS422 ports through on board converters. Two master-slave PG emulators are capable of
emulating wide PPR range of encoders. A true three-phase on-board emulator can simulate induction motors with
adjustable load and power factor for both 2 and 3 level drives. A current-limited pulse reference generator can provide
adjustable amplitude and frequency independently. An automatic power recycling circuit reboots the control card
safely, with feedback. Bipolar I/O references, active current source, external access port, supply voltage monitors, and
capability of supporting a very wide range of control cards are also provided.