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gefran 556 Quick Start Manual page 6

Timer, counter, frequency meter

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out=3 Function U3 - Cyclical with timed reset
As opposed to the previous function, the timer reloads the preset value
(S.P.1) when time 2 (S.P.2) has elapsed, during which the output remained
active.
The other conditions are unchanged.
out=4 Function U4 Latch 1 on output
When the time elapses, the relay energizes but the timer continues (in this
case) to count down toward negative values.
Signal IN2 resets the elapsed time, reloads the preset and resets the output.
If input IN3 arrives when the preset has already been reached, it reverses
the direction of the count (in this case UP) and, if it passes "0," de-energizes
the output.
out=5 Function U5 Latch 2 on output
Similar to the previous function, but the first time the timer reaches the set
time, in addition to energizing the output, it immediately reloads the preset
value and then continues as described for function U4, with the difference
that the relay remains energized even if the timer value exceeds the trip
point.
out=6 Function U6 Non-cyclical monostable with reset.
Similar to function U3, but with the difference that at the end of timings the
timer reloads the preset value only after input IN2.
out=7 Function U7 Cyclical double counter with superimposed counts.
Similar to U2, but instead of Timer 1 and Timer 2 there are Counter 1 and
Counter 2 with IN1 clock input.
out=8 Function U8 Cyclical double counter with alternating counts
Similar to U3, but instead of Timer 1 and Timer 2 there are Counter 1 and
Counter 2 with IN1 clock input.
6
8 • DESCRIPTION OF OUTPUT FUNCTIONS
Function (U3) Cyclical timer with timed reset
IN1
IN2
Timer 1
(a)
Timer 2
Relay
IN3
Timer 1
(b)
Timer 2
Relay
Function (U4) Timer with Output 1 memory
IN1
IN2
Timer
(a)
Relay
IN3
(b)
Timer
Relay
Function (U5) Timer with Output 2 memory
IN1
IN2
Timer
(a)
Relay
IN3
Timer
(b)
Relay
Function (U6) non-cyclical monostable timer with reset
IN1
IN2
Timer 1
Timer 2
(a)
Relay
IN3
Timer
(b)
Timer 2
Relay
80469C_MHW_556_02-2011_ENG
Time
Time
Time
Time

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