Lenze 8400 User Manual

17 Function library
17.1 Function blocks | L_SampleHold_2
1499
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
17.1.151 L_SampleHold_2
This FB can save a signal.
• The saved value is also available after mains switching.
Inputs
Outputs
Function
•When bLoad =TRUE, the nIn_a signal is switched to nOut_a.
•When bLoad = FALSE, the last-valid value is saved and output at nOut_a. A signal change at
nIn_a does not cause a change at nOut_a.
Behaviour after mains switching
The last-loaded value is permanently stored after switching of the supply voltage and reloaded after
restart.
• In order that the saved value is not immediately overwritten with the current input signal at nIn
after restart, bLoad must be set to FALSE at restart.
Designator
Data type
Information/possible settings
nIn_a
INT
Input signal
bLoad
BOOL
Save input signal
FALSE The last-valid value at nIn is saved and output to nOut. A signal
change at nIn does not cause a change at nOut.
TRUE The nOut output provides dnIn.
Designator
Data type
Value/meaning
nOut
INT
Output signal
/B6DPSOH+ROGB
E/RDG
Q,QBD
6+
Q2XWBD

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V