piezosystemjena d-Drive Bedienungsanleitung Seite 56

Command Description
MON monitor output
(default = 0)
0 (Umes/CL) position voltage in closed loop, it means an actuator with 80 μm in closed loop
generates 0...+10 V (= 8 μm/V or 0.125 V/μm)
1 (Udes) the reference input, sum of the analog signal applied to the MOD input, the digital
value by the OFFSET potentiometer, and the digital value from the EDS2 via
CAN-Bus
2 (Uact) output of the controller, set value for the power amplifier
3 (Uerr) closed loop control deviation including sign: the value can be positive or negative:
Uerr = Ucom – Umes
To generate an output of 0...+10 V the control deviation is divided by 2 and +5 V is added. To
calculate the control deviation back from the measured monitor voltage, take the following formula:
Uerr = (Umon – 5V) * 2
If the controller is properly adjusted the value is +5 V.
4 (Uerrabs) absolute closed loop control deviation:
|Uerr| = Ucom – Umes
5 (Uout) the actuator voltage -20 V...+130 V converts to 0...+10 V; to calculate the actuator
voltage back from the measured monitor voltage, take the following formula:
Uactuator = (Umon*15) – 20V
6 (Umes/OL) The position voltage in open loop (OL) is greater than in closed loop. The monitor
voltage would be smaller than 0 V and greater than +10 V. The value gets adjusted.
To calculate the open loop position voltage back from the measured monitor
voltage, use the following formula:
Umes(OL) = (Umon – 2.5V) * 2
The default setting is the position value in closed loop.
Geschäftsführer: Dr. Bernt Götz • Telefon 03641/66880 • Fax 03641/668866 • www.piezojena.com
56
Display Value
Umes/CL 0 = position in closed loop
Udes 1 = reference input
Uact 2 = PID command voltage
Uerr 3 = closed loop deviation including sign
Uerrabs 4 = absolute closed loop deviation
Uout 5 = actuator voltage
Umes/OL 6 = position in open loop
Ucom = 0...+10V
Umes = 0...+10V
Uerr = -10V...+10V
Uerr = -10V...+10V
Umon = 0...+10V
|Uerr| = 0...+10V
table 2: monitor