Function Generator - Siemens Sinumerik 840D Series Function Manual

3 Startup
3.11 Start-up functions
3.11.2

Function generator

3-84
The function generator for HLA is based on the existing functionality provided
for other drive types integrated to date. The funct. for HLA, which is not espe-
cially designed for hydraulic drives, is based on the SLM range of functions.
The function generator excites the drive with a periodic signal. The signal type
is a modifiable parameter. External measuring instruments such as oscillo-
graphs can record the system responses via DAC output jacks.
The following signals (operating modes) and signal types are available on the
HLA:
S
Signals (operating modes)
- valve spool setpoint
- Velocity setpoint
- Position setpoint
S
Signal type
- Square-wave
- Noise signal (only for signal output via DAC and external evaluation
equipment for frequency response analyses)
Fig. 3-36 Menu display "Function generator selection signal"
Fig. 3-37 Menu display "Function generator selection signal type"
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
 Siemens AG, 2003. All rights reserved
02.99
10.03