Datasheet

Crameda Intersys AG CC-DS-E-0011
Pumpwerkstrasse 23 Seite : 13
CH-8105 Regensdorf · Schweiz http://www.crameda.com
Type 846
! 7-segment display
! Height of character 16 mm
! Memory
! BCD-Input
! Signal level adaptation
! 24 V Signal- and supply voltage
! Depth when mounted 74 mm
Circuit diagram
In this module, the display is controlled by the Binary Code in
positive logic. The signal and supply voltage is +24 V. A
control signal (input EL) makes it possible to freeze the
display without affecting the incoming Binary Code signals.
Inputs «BI» and «LT» are already connected to the 24 V
power supply via internal resistors. If these inputs are not
used, the module will function properly due to these resistors.
Both of these inputs must be controlled in open collector
circuits.
Technical data
Character height 16 mm
Supply voltage V
CC
12 V...30 V
Supply current I
CC
with V
CC
= 12 V typ. 52 mA
= 24 V typ. 32 mA
= 30 V typ. 28 mA
Signal voltage 10 V...30 V
Limit frequency with V
CC
= 12 V ≤ 10 kHz
= 24 V ≤ 15 kHz
= 30 V ≤ 20 kHz
Depth behind panel 74 mm
Input data
Input voltage all inputs (except DP)
U
in
«0» min. - 3.5 V
or open
max. +2 V
U
in
«1» min. +10 V
max. +30 V
Input voltage Input DP
U
in
«0» min. -3.5 V
max. +0.7 V
U
in
«1 » min. +1.1 V
max. +30 V
or open
Input currents all inputs (except BL, LT and DP)
l
in
«0» with U
in
= -3.5 V max. -150 mA
U
in
= +2 V max. 140 µA
l
in
«1» with U
in
= +10 V max. 700 µA
U
in
= +30 V max. 2.6 mA
Input currents Inputs LT, BI
l
in
«0» with U
in
= -3.5 V max. -11 mA
= +2 V max. -9.2 mA
l
in
«1» with U
in
= +10 V max. -7.2 mA
= +30 V max. 3 mA
Input currents Input DP
l
in
«0» with U
in
= -3.5 V max. -1 mA
= +0.7 V max. -400 µA
l
in
«1» with U
in
= +1.1 V max. -10 µA
= +30 V max. 1.6 µA
DP (Decimal point): «DP» on «0» Decimal point on
«DP» on «1» Decimal point off
(+24 V or open)
Truth table
Inputs Outputs
LT* BI* EL
D
2
3
C
2
2
B
2
1
A
2
0
Display
1 1 0 0 0 0 0 0
1 1 0 0 0 0 1 1
1 1 0 0 0 1 0 2
1 1 0 0 0 1 1 3
1 1 0 0 1 0 0 4
1 1 0 0 1 0 1 5
1 1 0 0 1 1 0 6
1 1 0 0 1 1 1 7
1 1 0 1 0 0 0 8
1 1 0 1 0 0 1 9
1 1 0 1 0 1 0 A
1 1 0 1 0 1 1 b
1 1 0 1 1 0 0 C
1 1 0 1 1 0 1 d
1 1 0 1 1 1 0 E
1 1 0 1 1 1 1 F
0
x x x x x x
8
(
Test
)
1 0
x x x x x
none
1 1 1
x x x x
stored**
x = «0» or «1»
* Inputs Bl and LT are internally wired to H. An open
collector control circuit is needed.
** Depends on the BCD value during the leading edge of
the «EL».
Supply current in relation to supply voltage
Type VDC Ordering code
846, 24 V 846-057-21