Wilo DD-I, Installation And Operating Instructions Manual

Page: 110 / 196

en Electrical connection
110 WILO SE 2020-12
ƒ
The unit automatically configures parameters during initial commissioning. Indi-
vidual digital inputs are pre-assigned as part of this process. It is not possible to
modify pre-assignments!
ƒ
Assign the corresponding function in the Digital Data Interface to guarantee correct
functionality of freely configurable inputs.
DANGER
Risk of fatal injury due to incorrect connection!
If the pump is used in explosive atmospheres, observe chapter "Electrical connection
in potentially explosive atmospheres"!
NOTICE
Observe the manufacturer’s instructions!
For more information, read and comply with the frequency converter instructions.
Frequency converter: Wilo-EFC
ƒ
Input voltage: +24 VDC, terminal 12 and 13
ƒ
Reference potential (0 V): Terminal 20
Terminal Function Contact type
18
Start Normally open contact (NO)
27
External off Normally closed contact (NC)
37
Safe Torque Off (STO) Normally closed contact (NC)
19, 29, 32
Freely configurable
Description of preassigned input functions:
ƒ
Start
Input/output signal from primary control.
NOTICE! If the input is not required, in-
stall a converter bridge between terminals 12 and 18!
ƒ
External off
Remote deactivation using a separate switch.
NOTICE! The input directly switches
over the frequency converter!
ƒ
Safe Torque Off (STO) – safe deactivation NOTICE! If the input is not required, in-
stall a converter bridge between terminals 12 and 27!
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
High Water
Signal for overflow level.
ƒ
Dry Run
Signal for dry-running protection.
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
Reset
External signal to reset error messages.
ƒ
High Clogg Limit
Activating higher tolerance ("Power Limit - High") for clogging detection.
Contact type for the corresponding function
Function Contact type
High Water
Normally open contact (NO)