24

Digital Indicators

K3HB-R/-P/-C

■ Derating Curve for Sensor Power Supply (Reference Values)

For 12V

Note: 1. The above values were obtained under test conditions with the standard mounting. The derating curve will vary with the mounting

conditions, so be sure to adjust accordingly.

2. Internal components may be deteriorated or damaged. Do not use the Digital Indicator outside of the derating range (i.e., do not use it in

the area labeled (1), above).

■ Internal Block Diagram

140

120

100

80

60

40

20

0

−20

−10

0

102030405060

Ambient temperature (

°C)

1

Keys

Micro-

computer

Waveform

shaping circuit

Waveform

shaping circuit

Drive

circuit

Indications

EEPROM

Drive

circuit

Digital input

circuit

Linear output

circuit

Filter

Pulse input

circuit

BCD

• Input circuit

• Output circuit

• Transistor

output circuit

Drive

circuit

Drive

circuit

Drive

circuit

Drive

circuit

Transistor

output

Relay output

Pulse input

BCD I/O

Event input

Linear output

Sensor power

supply

DeviceNet

Communications

DeviceNet

circuit

Communi-

cations

driver

X

Power supply

Power supply circuit (isolated)

DC-DC

Converter (isolated)