en
Electrical connection
122
WILO SE 2020-12
ƒ
External off
Not needed in LSI system mode.
Install converter bridge between terminals 12 and
27!
ƒ
Safe Torque Off (STO) - safe deactivation
Hardware shutdown of the pump by the frequency converter, independent of the
pump control. Automatic reactivation is not possible (reactivation lock).
NOTICE! If
the input is not required, install a converter bridge between terminals 12 and 37!
It is possible to assign the following functions to available inputs at the Digital Data In-
terface:
ƒ
Leakage Warn
Signal for external sealing chamber monitoring. A warning message is output in the
event of a fault.
ƒ
Leakage Alarm
Signal for external sealing chamber monitoring. The pump is shut down in the event
of a fault. Modify the alarm type in the configuration to define the downstream re-
sponse.
ƒ
High Clogg Limit
Activating higher tolerance ("Power Limit - High") for clogging detection.
Functions "High Water", "Dry Run" and "Reset" are connected to the I/O module and as-
signed in the Digital Data Interface!
Contact type for the corresponding function
Function
Contact type
Leakage Warn
Normally open contact (NO)
Leakage Alarm
Normally open contact (NO)
High Clogg Limit
Normally open contact (NO)
4.6.7
Relay output connection
Note the following when connecting relay outputs:
ƒ
Use shielded cables.
ƒ
You can freely configure the corresponding functions for relay outputs. Assign cor-
responding functions in the Digital Data Interface!
NOTICE
Observe the manufacturer’s instructions!
For more information, read and comply with the frequency converter instructions.
Wilo-EFC frequency converter
ƒ
2x type C relay outputs.
NOTICE! Observe the manufacturer instructions for exact
relay output positioning!
ƒ
Switching capacity: 240 VAC, 2 A
A higher switching capacity can be applied at relay output 2 on the NO contact (ter-
minal: 4/5): max. 400 VAC, 2 A
Terminal
Contact type
Relay output 1
1
Centre terminal (COM)
2
Normally open contact (NO)
3
Normally closed contact (NC)
Relay output 2
4
Centre terminal (COM)
5
Normally open contact (NO)
6
Normally closed contact (NC)
It is possible to assign the following functions to the Digital Data Interface:
ƒ
Run
Individual run signal of the pump
ƒ
Error
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