English
14
WILO SE 12/2020
Field bus connection "ModBus TCP"
Connection to a building management system
using ModBus TCP takes place via the CPU’s
Ethernet interface:
Pass the cable through the special (dark grey)
threaded cable gland, fix and connect it as shown.
CAUTION! No external voltage may be applied.
NOTICE
The information for installation and for electrical
connection of optional inputs/outputs can be
found in the installation and operating instruc
-
tions for these modules.
8 Commissioning
WARNING! Risk of fatal injury!
Commissioning by qualified personnel only!
Improper commissioning poses a risk of fatal
injury. Have commissioning performed by quali
-
fied personnel only.
DANGER! Risk of fatal injury!
When working on the open switchgear, there is
a danger of electric shock from touching the live
components.
The work must only be carried out by qualified
personnel!
We recommend that you have the switchgear
commissioned by Wilo customer service.
Before switching on for the first time, the on-site
wiring must be checked to ensure it is correct, in
particular the earthing.
Tighten all connection terminals prior to
commissioning!
NOTICE:
In addition to the activities described in these
installation and operating instructions, it is neces
-
sary to perform the commissioning measures in
accordance with the installation and operating
instructions of the overall system (pressure-
boosting system).
8.1 Factory setting
The switchgear is pre-set at the factory.
The factory settings can be restored by Wilo
Service.
8.2 Checking the motor direction of rotation
By briefly switching on each pump in the "Manual
mode" operating mode, check whether the direc
-
tion of rotation of the pump in mains operation
corresponds to the arrow on the pump housing.
For the glandless pumps the correct or false direc
-
tion of rotation is shown by an indicator LED in
terminal box (see installation and operating
instructions of the pump).
If the direction of rotation of
all
pumps in mains
operation is incorrect, swap over any 2 live wires in
the main mains cable.
Switchgear without frequency converter
(CC version):
• If the direction of rotation of only one pump in
mains operation is wrong, swap over any 2 phases
on motors P
2
≤ 4 kW (direct starting) in the motor
terminal box.
• If the direction of rotation of only one pump in
mains operation on motors P2 ≥ 5.5 kW (star-
delta starting) is wrong, swap over 4 connections
in the motor terminal box. In this case, swap the
winding start and winding end of 2 live wires (e.g.
V
1
for V
2
and W
1
for W
2
).
Switchgear with frequency converter (CC-FC
version):
• Mains operation: Set each pump to "Manual mode"
individually in the menu. Afterwards, proceed like
with switchgear without frequency converter.
• Frequency converter mode: In the automatic with
FC operating mode, set each pump individually to
"Automatic" in the menu. The direction of rotation
in frequency converter mode is then checked by
briefly switching on the individual pumps. If the
direction of rotation of all pumps is incorrect,
swap over any 2 live wires at the frequency con
-
verter output.