Saftronics FP5 Series User Manual page 80

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Chapter 3 - Programming Features
Inputs & Outputs
Example: Set n002 to "SEQ=TRM REF=TRM".
Open: Frequency reference from control circuit terminals FV & FI,
and run command from control circuit terminals S1 and S2.
Closed: Frequency reference and run command from serial communi-
cation.
· Timer Function (setting: "Timer Start Cmd")
The timer function is used in conjunction with the multi-function con-
tact output (parameter n041 or n042 set to "Timer Output").
When the timer function input is "closed" for longer than the ON-delay
timer (n080), the timer function output closes.
When the timer input is "open" for longer than the OFF-delay timer
(n081), the timer function output opens.
Multi-function Contact
Input: Timer Function
Multi-function Contact
Output: Timer Function
· Analog Reference Sample/Hold Selection (setting:"Ref Sample Hold")
This feature allows a single analog signal to be used among multiple invert-
ers to "sample and hold" separate speeds. Each inverter can be commanded
to acknowledge the reference at different times. If the analog reference
sample/hold input terminal is "closed" for 100ms or longer, the analog fre-
quency reference is sampled; when it opens, the analog frequency reference
is held.
Note: t1, t3 - Reference is sampled once with an input closure of 100ms or longer.
t2 - Reference is not sampled with an input closure of less than 100ms.
80
ON
ON
n080 n081
Figure 48 Timing Diagram of Timer Function
100ms
100ms
t1 t2 t3
Figure 49 Sample/Hold Selection - Analog Reference
ON
ON ON ON ON ON ON
ON
n080 n081
Analog Input
Fref
Closed
Open
FP5/GP5 User's Manual