Technical Data - Pepperl+Fuchs KH-LCD-24-24VDC Instrucciones De Montaje Y De Mantenimiento

3 Description
3.1 General
KH-LCD-24-24VDC is a timer: the timer starts
counting when terminal 4 input or terminal 5 input is
activated. Electronic or manual Reset possible.
Timer 0.01 36 s,
0.10 6 min,
1.00 1 h
7 digit LCD display, height 8 mm
Counting range 0.00 ... 99999.99 h
Data retention: EEPROM
Overflow indication: blinking display
DIN housing 48 x 24, dark grey
Power supply 10 ... 30 V DC, max. 25 mA
Blinking sand glass indicates active time measure-
ment. Inactive measurement is indicated by static
sand glass display.
3.2 Connection and functions
Terminal assignment
Function and terminal assignment
(the bold indications correspond to the text on the device)
Ter- Function
minal
1 10-30 V DC,
Supply voltage +Ub
2 GND, 0 V DC
3 GND, 0 V DC
4 INP PNP, the timer starts counting when a
voltage > 3.5 V is applied to terminal 4
input.
5 INP NPN, the timer starts counting when a
voltage < 2 V is applied to terminal 5 input.
6 RESET MANUEL ENABLE,
Reset enable input: when terminal 6 is
connected to GND or to 0 V (< 2 V), the
key or the reset input allows resetting the
counter to 0.00.
7 RESET,
Reset input: when terminal 7 is connected
to GND or to 0 V (< 2V), the counter is
reset to 0.00 (electronic Reset)
8 is not used with the standard timer
3.2.1.1 Function of the front key
Pressing the front side key resets the timer to 0.
This function is only active when input 6 is set to
0 V or connected to GND.
4

Technical data

Display: 7 digit LCD display,
height 8 mm, operating indication by
means of a sand glass
Supply voltage:
10 ... 30 V DC, max. 25 mA
Undervoltage: Message for Ub< 8 V: PO-FAIL
and data back-up
Switching-on delay:
500 ms
Min. measured time:
200 ms
Inputs: NPN counting input: static NPN
input
PNP counting input: static PNP
input
Reset key enable input: static NPN
input,
Reset by edge-triggered NPN input
(min. 20 ms)
Switching level:
Low 0 ... 2 V DC
High 3.5 ... 30 V DC
switching threshold approx. 2.7 V
Input resistance:
10 kOhm
Switching-on delay:
500 ms
Data retention: EEPROM
Operating temperature:
-20 ... +65 °C
Storage temperature:
-25 ... +75 °C
Weight: 40 g
EMC: Noise emission EN55011 Class B
Noise immunity EN61000-6-2
Connections: 8 screw terminals, pitch 5.08 mm
Housing: Front panel mounting housing
DIN 43700, 48 x 24, dark grey,
Ral 7021
Protection: IP65 on the front, IP23 on the rear
Cleaning: Clean the front side only with a soft
cloth moistened with water
Shock resistance:
EN60068-2-27 (device switched off)
100 g /XYZ