Function Diagramm; Setting Rk 7817; Notes For Setting Of The Rk 7817 - Dold Rk 7817 Datenblatt / Betriebsanleitung

Function Diagramm

U H
A1-A2
A3-A2
U St
B1-A2
t
1
AV
t
2 EW
0,5s
t
3
IE
t t
4 BI
U H
A1-A2
A3-A2
U St
B1-A2
t
5 RV
t t
6 IF
t
7 AW
t
8
AV/RV
 
... = Position of function switch
 AV = Delay on energisation
 EW = Fleeting on make
 IE = Delayed pulse
 BI = Flasher,
start with pusle
U N
0
U N
0
t a t b t c t d
15-18
t=t a +t b +t c
15-16
15-18
t=t a +t b +t c
15-16
15-18
t=t a +t b +t c 0,5s + t d
15-16
t e t f
15-18
t=t a +t b +t c t=t e + t f
15-16
21-24
21-22
U N
0
U N
0
15-18
t t
15-16
15-18
t t
15-16
15-18
t t
15-16
15-18
t t
t
15-16
21-24
21-22
M9723
 RV = Delay on de-energisation
 IF = Pulse-forming function
 AW = Fleeting on break
 AV/RV = Delay on energisation and
de-energisation

Setting RK 7817

green LED,
on when voltage
connected
yellow LED,
function see
indicators

Notes for setting of the RK 7817

Function- and time range setting
The function and time setting via rotary switches are enabled only when
the auxiliary voltage is connected. Changing of these rotary switches while
during operation does not take an effect
Adjustment assistance
The flashing period of the yellow LED is 1 s ± 4% and can be used to
adjust the time. Especially on the lower end of scale and for long times it
is suitable as the multiplication factors between the different time ranges
are exact without tolerance.
Example:
The required time is 40 min. It has to be adjusted within the range
3 ... 300 min. The time check takes too long as several timing cycles would
be necessary for a precise value.
For faster adjustment the setting is made to 0.03 ... 3 min. On this range the
potentiometer should be set to 0.4 min (= 24 sec). With the right potentiometer
setting the LED must show 24 flashing cycles. After that the time range is
switched over to 3 ... 300 min and the setting is complete.
Time interruption / Time adding
The timing cycle can be interrupted by controlling input B1 (+) with control
voltage. Removing the control signal will continue the timing cycle (time
addition).
Control input B1
The control input B1 (+) has to be supplied with voltage against A2 with
the functions RV, IF, AW, AV / RV. The control signal could be the same as
the auxiliary/control voltage of A1 and A3 or any other voltage between
12 and 240 V AC or DC. Operating a parallel load between B1 and A2 is
also possible.
If with function IF the inputs A1 and B1 are controlled simultaneously a
pulse with the adjusted length is started.
14
range selector switch
time setting t
function setting
option
M9878
RK 7817 / 23.12.20 en / 336A