AN353423548483en-000201.pdf - 第33页

1. 2. 3. 9 Ground Fault Protection 9.1 Overview N O T I C E Ground fault protection is only available on ground fault enabled option cards with soft starters running a compatible version of software. Contact the supplier…

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Object name
Class
Instance
Attribute
Object name
Class
Instance
Attribute
Depth Sensor Type
101
193
100
Temperature Trip Level
102
117
100
Depth Units
101
194
100
Pump Trip Action
Depth at 4 mA
101
195
100
Pressure Sensor
102
118
100
Depth at 20 mA
101
196
100
Flow Sensor
102
119
100
Flow Protection
Depth Sensor
102
120
100
High Flow Trip Level
101
197
100
High Pressure
102
121
100
Table 13: Objects with Class, Instance, and Attribute (Read/Write) - Continued
Object name
Class
Instance
Attribute
Object name
Class
Instance
Attribute
Low Pressure
102
122
100
Ground Fault Delay
102
129
100
High Flow
102
123
100
Ground Fault Trip Active
102
130
100
Low Flow
102
124
100
Ground Fault Action
102
131
100
Flow Switch
102
125
100
Ground Fault CT Ratio
102
132
100
Well Depth
102
126
100
Calibrate 4–20mA
RTD/PT100 B
102
127
100
4mA Calibration
102
133
100
Ground Fault
20mA Calibration
102
134
100
Ground Fault Level
102
128
100
–
–
–
–
AN353423548483en-000201 / 130R094532 | Danfoss A/S © 2022.10
Attributes
EtherNet/IP Card
Installation Guide
1.
2.
3.
9 Ground Fault Protection
9.1 Overview
N O T I C E
Ground fault protection is only available on ground fault enabled option cards with soft starters running a compatible version of
software. Contact the supplier for assistance.
The EtherNet/IP Card can detect ground current and trip before the equipment is damaged.
Ground fault protection requires a 1000:1 or 2000:1 current transformer (not supplied). The CT should be rated 1 VA or 5 VA. The soft
starter can be configured to trip at 1–50 A. If ground fault current rises above 50 A, the soft starter trips immediately.
Parameter 40-3 Ground Fault Trip Active selects when ground fault protection is active.
9.2 Connect the CT to the Ground Fault Inputs
To use ground fault protection, a common-mode current transformer (CT) must be installed around all 3 phases.
Procedure
Use a 1000:1 or 2000:1 CT with a rating of 1 VA or 5 VA.
Set parameter 40-5 Ground Fault CT ratio to match the CT.
Connect the CT to the ground fault terminals (G1, G2, G3).
For maximum protection, the CT should be installed on the input side of the soft starter.
9.3 Configure Ground Fault Protection Settings
Ground fault protection settings must be set in the soft starter.
Parameter
Description
Parameter 40-1 Ground Fault Level
Sets the trip point for ground fault protection.
Parameter 40-2 Ground Fault Delay
Shows the response of the EtherNet/IP Card to ground fault variation, avoiding trips due
to momentary fluctuations.
Parameter 40-3 Ground Fault Trip Active
Selects when a ground fault trip can occur.
Parameter 40-4 Ground Fault Action
Selects the response of the soft starter to the protection event.
Parameter 40-5 Ground Fault CT Ratio
Set to match the ratio of the ground current measuring CT.
AN353423548483en-000201 / 130R0945 | 33Danfoss A/S © 2022.10
Ground Fault Protection
EtherNet/IP Card
Installation Guide
10 Network Design
10.1 Star Topology
In a star network, all controllers and devices connect to a central network switch.
e77ha628.10
Illustration 3: Example of Star Topology
10.2 Line Topology
In a line network, the controller connects directly to 1 port of the 1
st
card. The 2
nd
Ethernet port connects to another card, which in
turn connects to another device until all devices are connected.
e77ha629.10
Illustration 4: Example of Line Topology
N O T I C E
The device has an integrated switch to allow data to pass through in line topology. The device must be receiving control power
from the soft starter for the switch to operate.
N O T I C E
If the connection between 2 devices is interrupted, the controller cannot communicate with devices after the interruption point.
AN353423548483en-000201 / 130R094534 | Danfoss A/S © 2022.10
Network Design
EtherNet/IP Card
Installation Guide