Connection Diagrams - Samson Control EC-L Manuel D'installation Et Mise En Service

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4b Terminal strip for sensors for active ex-mode
5 Contactor combinations
6 Output relay
7 Control board
8 Potentiometer for rated motor current
9 RS232 interface for Modbus
Pressure connection for dynamic pressure bell
10
("IPS" version only)
Jumper for setting the termination/polarisation for the
11
Modbus

6.4.1. Connection diagrams

Fig. 3: Connection diagram mains connection and pump
connection
1 Mains connection terminal
Converter bridge for selecting the voltage of the mains
2
connection
3 Earth terminal strip
4a Terminal strip for sensors
4b Terminal strip for sensors for active ex-mode
8 Potentiometer for rated motor current
Fig. 4: Connection diagram inputs
Fig. 5: Connection diagram outputs
6.4.2. Mains connection switchgear (Fig. 3)
BEWARE of incorrect voltage selection!
The switchgear is equipped with a multi-volt-
age power supply unit. This allows operation
at different voltages. Pre-selected voltage is
set at 400 V in the factory. For other voltag-
es, the converter bridge must be reinserted
accordingly. The power supply unit may be
destroyed if an incorrect voltage is selected!
Insert the power supply cable laid by the custom-
er through the threaded cable connections and
secure them. Connect the wires to the terminal
strip according to the connection diagram.
The protective earth conductor (PE) is connected
to the earth terminal strip.
• Mains connection 1~230 V:
• Cable: 3-core
• Wire: L, N, PE
• Converter bridge pre-selected voltage: 230,
COM
• Mains connection 3~380/400 V:
• Cable: 4-core
• Wire: L1, L2, L3, PE
• Converter bridge pre-selected voltage:
- 3~380 V: 380, COM
- 3~400 V: 400, COM
48
NOTE
The switchgear has an integrated monitoring
of the rotating field. The switchgear must be
connected to a clockwise rotating field so that
the switchgear operates correctly. If there is
no clockwise rotating field, error code "E006"
appears on the display.
Rotating field monitoring in menu 5.68 must
be deactivated when operating an alternating
current connection!
6.4.3. Mains connection pump (Fig. 3, item 1/2)
DANGER! Incorrect connection can result in
danger!
During intermediate switching of electronic
start-up controllers such as frequency con-
verters, specifications for use change within
potentially explosive areas. There is a risk of
fatal injury due to explosion! Ex-rated pumps
must always be directly connected to the
switchgear!
Insert the power supply cable laid by the custom-
er through the threaded cable connections and
secure them. Connect the wires to the contactor
as per the connection diagram.
• Mains voltage 1~230 V:
• Terminal T1: L
• Terminal T3: N
• Earth terminal strip: PE
• Mains voltage 3~380/400 V:
• Terminal T1: L1
• Terminal T2: L2
• Terminal T3: L3
• Earth terminal strip: PE
NOTE
The rotating field is routed directly to the pump
connection from the mains connection. Note
the required rotating field of the connected
pumps (clockwise or counter-clockwise)! Ob-
serve the installation and operating instructions
for the connected pumps.
Once the pump has been connected correctly, the
rated motor current needs to be adjusted.
Adjusting the rated motor current
(Fig. 3, item 8)
The max. permissible rated motor current must be
adjusted on the potentiometer:
• At full load, the motor protection should be set
to the rated current shown on the rating plate.
• At partial load, we recommend that the motor
protection be set 5 % above the current meas-
ured at the duty point.
The adjusted value can also be read via the menu:
• Pump 1: Menu 4.25
• Pump 2: Menu 4.26
• Pump 3: Menu 4.27
Wilo Salmson France SAS 03-2017 V05 DIN A4
INSTALLATION