Honeywell GmbH
14
Translation of original - EN1H-1374GE23 R1014
GB
7.10 Electrical connection
7.10.1 Safety instructions
7.10.2 Connection specifications
The diameter of the electrical supply line has to be determined according
to the total connection value.
The customer required protection measures for the electrical connection
of the system is defined in DIN 14462.
7.10.3 Connecting electrical accessories
The switch cabinet is equipped with the following clamps for connecting
electrical accessories:
• Remote on/off for connecting limit switches
The clamps are labelled in the diagram and in the cabinet.
7.10.4 Connecting the limit switch
Connect the limit switch to the remote on/off connecting clamps as follows:
Figure 8:
Setting without limit switch
Figure 9:
Setting with limit switch
Figure 10:
Setting for two limit switches
Figure 11:
Setting for more than 2 limit switches
7.10.5 Potential-free contacts
Potential-free contacts are available for the following messages:
• Motor protection warning
• Collective error message for pump requirements, pump overheating,
control voltage missing , mains power failure and short circuit/wire brea-
kage
• Buffer tank overflow
• Water shortage
• Switch to position manual/automatic
• Separation of potable water
• Failure of power supply from backup battery
The clamps are labelled in the diagram and in the cabinet.
Danger
Danger of injury from electric voltage.
ª
High shock currents and burns from direct and indirect contact with
live parts.
Turn off the power supply before assembling the compact
booster unit and secure it from being turned on.
Non- or erroneously-connected cables
ª
Malfunctions, which endanger the safety of operating personnel.
Work on electrical equipment may only be performed by specia-
list electric technicians.
Observe regulation IEC 30364 (DIN VDE 0100) and for explo-
sion protection IEC 60079 (DIN VDE 0165).
Faulty mains connection
ª
Damage to the electricity network, short circuit!
Observe the conditions for technical connections of the local
power supply companies.
Wrongly wired connections
ª
Destruction of electrical / electronic components.
Work on electrical equipment may only be performed by specia-
list electric technicians.
Improperly connected wiring and lines (e.g. too small bend radius)
ª
Smouldering and fires from cables.
Work on electrical equipment may only be performed by specia-
list electric technicians.
Live cable ends and components
Make sure the protective earth system is connected throughout.
Always observe DIN 14462 for electrical connections.
Power supply connection
3/N/PE, AC 400V, 50Hz
Control transformer
400V / 230V- 24V
The circuit diagrams of the respective systems are kept in the switching
device and should always remain there. The documentation included
with the switch cabinet contains a list of electronic parts. Please always
specify the circuit diagram number when ordering spare electronic
parts.
Caution
Terminal resistor for the connection of the remote on/off is missing or
not connected properly
ª
Danger of system malfunction!
There is a 10kOhm terminal resistor connected to the connector
clamps for remote on/off (limit switch). If multiple messaging
lines have been connected, it has to be positioned behind the
last limit switch.
The relay for monitoring wire breakage and short circuit
evaluates the following resistances: >10.3kOhm: Wire brea-
kage 10kOhm: Fully operational 1kOhm: Pump start through
use of a limit switch <300Ohm: Short circuit A wiring scheme
for the external remote on/off switch is included with the system.
The external messaging line has to be wired according to the
values specified above.
a)
First limit switch
b)
Last limit switch
a)
First limit switch
b)
Second limit switch
c)
Last limit switch
Forward alert messages to the control unit.
Potential-free collective error message can be created by looping throu-
gh of potential-free single messages.
