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PDF K8AB-VW Data sheet ( Hoja de datos )
| Número de pieza | K8AB-VW | |
| Descripción | Single-phase Voltage Relay | |
| Fabricantes | Omron | |
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Single-phase Voltage Relay
K8AB-VW
Ideal for voltage monitoring for industrial
facilities and equipment.
• Monitor for overvoltages and undervoltages simultaneously.
Separate settings and outputs supported for overvoltages and
undervoltages.
• Manual resetting and automatically resetting supported by one
Relay.
• Pre-alarm Monitoring Mode.
• Two SPDT output relays, 6 A at 250 VAC (resistive load).
• Process control signal (0 to 10 V) and current splitter input
supported.
• Output status can be monitored using LED indicator.
• Input frequency of 40 to 500 Hz supported.
• Inputs are isolated from the power supply.
Refer to Safety Precautions for the K8AB
Series. Refer to page 9 for the Q&A section.
Model Number Structure
■ Model Number Legend
K8AB-@@
1 23
4
1. Basic Model
K8AB:
Measuring and Monitoring Relays
2. Functions
VW: Single-phase Voltage Relay (Simultaneous upper and lower limit monitoring)
3. Measuring Current
1: 6 to 60 mV AC/DC, 10 to 100 mV AC/DC, 30 to 300 mV AC/DC
2: 1 to 10 V AC/DC, 3 to 30 V AC/DC, 15 to 150 V AC/DC
3: 20 to 200 V AC/DC, 30 to 300 V AC/DC, 60 to 600 V AC/DC
4. Supply Voltage
24 VAC/DC: 24 VAC/DC
100-115 VAC: 100 to 115 VAC
200-230 VAC: 200 to 230 VAC
CSM_K8AB-VW_DS_E_3_1
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1
1 page  
Connections
■ Wiring Diagram
Overvoltage and Undervoltage
Operation Diagram
DIP switch settings: SW3 and SW4 both ON or both OFF.
Power supply voltage
Overvoltage setting (AL1)
Hysteresis: Fixed at 5%
Input
Undervoltage set value (AL2)
AL1 alarm indicator
AL2 alarm indicator
Overvoltage (AL1) relay
Flashing
Flashing
Lit T
Hysteresis: Fixed at 5%
Lit
T: Operating time (0.1 to 30 s)
Undervoltage (AL2) relay
T: Operating time (0.1 to 30 s)
T
T1: Power ON lock (1 s or 5 s)
T1
Note: 1. The K8AB-VW output relay is normally operative.
2. The power ON lock prevents unnecessary alarms from
being generated during the instable period when the power
is first turned on. There is no relay output during timer
operation.
Overvoltage and Overvoltage
Operation Diagram (Overvoltage Pre-
alarm Mode)
DIP switch settings: SW3 ON and SW4 OFF.
Power supply voltage
Overvoltage setting (AL1)
Overvoltage setting (AL2)
Input
AL1 alarm indicator
AL2 alarm indicator
Overvoltage (AL1) relay
Flashing
Flashing
Lit
Lit
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
Overvoltage (AL2) relay
T1: Power ON lock (1 s or 5 s)
T1
Note: 1. The K8AB-VW output relay is normally operative.
2. The power ON lock prevents unnecessary alarms from
being generated during the instable period when the power
is first turned on. There is no relay output during timer
operation.
K8AB-VW
Undervoltage and Undervoltage
Operation Diagram (Undervoltage Pre-
alarm Mode)
DIP switch settings: SW3 OFF and SW4 ON.
Power supply voltage
Undervoltage set value (AL1)
Input
Undervoltage set value (AL2)
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
AL1 alarm indicator
AL2 alarm indicator
Flashing
Flashing
Lit
Lit
Undervoltage (AL1) relay
Undervoltage (AL2) relay
T1: Power ON lock (1 s or 5 s)
T1
Note: 1. The K8AB-VW output relay is normally operative.
2. The power ON lock prevents unnecessary alarms from
being generated during the instable period when the power
is first turned on. There is no relay output during timer
operation.
Single-phase power
Power supply
voltage
A1
A2
Voltage input
V1
V2 COM
V3
14
Signal output
12
11
AL1 relay
signal
output
Load
24
Signal output
22
21
AL2 relay
signal
output
Note: There is no polarity when a DC current input is used.
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5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet K8AB-VW.PDF ] | |
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