K8AB-AS1 100/115VAC Omron, K8AB-AS1 100/115VAC Datasheet - Page 6

• Manufacturer Part Number: K8AB-AS1 100/115VAC
• Description: 20-500mA 1-phs Current Monitor
• Manufacturer: Omron
• Series: K8ABr

Specifications of K8AB-AS1 100/115VAC

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: K8AB-AS1-100-115VAC; K8ABAS1100115VAC; Z2803

6
Application Examples
Chain Breakage Protection for Conveyors
Protection against Idle Running
of a Submersible Pump
Bulb Burnout Detection
Measuring and Monitoring Relays
Power supply
(If a motor is used as the load, be careful that the inrush current does not exceed
the allowable input range.)
Locked conveyor
External CT
Idle pump operation
Submersible
pump
Under current detection
L
The K8AB-AS is used to detect burned out light bulbs.
The K8AB-AS can detect burned out light bulbs by
detecting under current levels. The Relay's sensitivity
can be adjusted to detect burned out light bulbs even in
applications where multiple light bulbs are used.
K8AB-AS
Under current
monitoring
Purpose
Advantages
L
Bulb
L
When the motor locks up, its rotational torque
may break the chain. To prevent that from
happening, the relay must trip the instant it
detects a motor lock error. A thermal relay
cannot be used for chain protection because it
takes too long to start operating.
The K8AB-AS offers effective alarms because
it starts operating in 0.1 s or less.
L
L1 L2 L3
Motor
Purpose
Advantages
A submersible pump will malfunction if it begins to
operate out of water, so instantaneous detection of
this kind of idle operation is essential.
The K8AB-AS can detect idle pump operation by
detecting under current levels.
L1
L
Purpose
Advantages
L2 L3
CT
K8AB-AS
Instantaneous
over current monitoring
CT
Pump
Over current detection
Under current detection
K8AB-AS
Under current
monitoring
Relay output:
6 A at 250 VAC
(resistive load)
Relay output:
6 A at 250 VAC
(resistive load)
K8AB-AS
K8AB-AS
K8AB-AS
Alarm
Alarm
Battery Voltage Checking
Monitoring the Control Power Supply at
Communication Bases
Battery
Communications bases must be carefully monitored because the effects of a
power outage or voltage drop would be highly detrimental to communications.
This is why the K8AB-VW monitors the control panel power supply for over
voltage and under voltage levels.
It can detect over voltage and under voltage as well as output individual over
voltage and under voltage alarms using SPDT relays.
(The 24-VDC model of the K8AB-VW is not insulated between the inputs and the
power supply. Use an insulated power supply when using this model.)
220 VAC
Power supply
monitoring
Purpose
Advantages
(The 24-VDC model of the K8AB-VS is not insulated between the inputs and
the power supply. Use an insulated power supply when using this model.)
24 VDC
K8AB-VW
Over and Under Voltage
Monitoring
Alarm
Under voltage
alarm indicator
alarm indicator
Over voltage
Under voltage
Under voltage
T1: 1 s or 5 s selection (Timer when the control power supply is turned ON.)
Over voltage
Over voltage
The K8AB-VS is used to check battery charge
levels.
The K8AB-VS can detect when the battery
charge is low.
input level
alarm relay
alarm relay
Voltage
Purpose
Advantages
Wireless
communications base
T1
Flashing
T
T: Operation time (0.1 to 30 s)
Flashing
Lit
K8AB-VW
K8AB-VS
Under voltage
monitoring
K8AB-VS
T
Lit
Alarm