Components 2000
140
E N C O D E R S
C O U N T E R S
C O N T R O L L E R S I N D I C A T O R S R E L A Y S P R I N T E R S
C U T T E R S
signo 721
Compact Preset Counter
■
1 or 2 presets
■
Prescaler with output for connection of a totalizing counter
■
Large, 5-digit LED display
■
Connection by plug-in screw terminals
■
Variety of programming possibilities
■
Small, compact design in DIN dimensions 48 x 48 mm
■
Keypad can be secured against unauthorized access
■
Electronic value retention, environmentally sound, uses no batteries
DISPLAY
5-digit LED display with 7 mm high digits. Easy to read, decimal point can be pro-
grammed if required.
Line 1: Shows the current count in counting operation and entry values in program-
ming mode.
Line 2: Shows the operator the individual programming steps during programming.
Counter with one preset
P
Preset
COR
Correction
Prescaler
Value input
VALUE INPUT
Values shown in the diagrams can be
entered or modified with four large keys
on the front of the counter.
P1
Preset 1
P2
Preset 2
COR
Correction
PSC
Prescaler
Value input
Counter with two presets
Counter with gate and display memory
Counter with up/down
Reset
Auto-Reset On
see
Key 1 Off
Key 2 Off
Key-Reset Lock
Input 5kHz
Display-Hold Off
Inhibit Off
pnp-Input
0,05s
1s
bist.
Out
9 8 7 6 5 4 3 2 1
Set
Off
On
On
On
30Hz
On
On
npn
Reset
Auto-Reset On
see
Key 1 Off
Key 2 Off
Key-Reset Lock
Input 5kHz
pnp-Input
0,05s
1s
bist.
Out
Set
Off
On
On
On
30Hz
npn
9 8 7 6 5 4 3 2 1
Table
Keylock
(Page 78)
Table
Keylock
(Page 78)
PROGRAMMING
The switch positions illustrated in the diagram program the counter as follows:
9 – Set mode (subtracting count)
8 – With automatic repeat
7 – Presets, correction value and
6 – prescaler can be modified if "keylock" input is not actuated
5 – Keypad reset activated
4 – Max. counting frequency 5 kHz
3 – Display memory Off
without function
2 – Gate to appl. input
for u/d switch
1 – pnp input logic
Pot – Signal duration OUT approx. 1 sec.
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