GB
3.5
Electrical connection
3.5.1
X-Series (XC) Premium Controller electrical circuit diagram
DANGER
Life-threatening danger due to electric shock
Live units and exposed connection cables can generate an electric shock and cause severe accidents.
➢ Work on electrical connections must be carried out exclusively by trained, qualified electricians.
➢ Ensure that the unit is voltage-free before routing all electrical connections.
Item
Designation
C1
DC Link capacitor
F20
Overload relay
L1
PFC choke
LP3
PCB inverter box
M2
Condenser fan (external)
S1.1
Door open
TK
Door contact / signal (4,5)
Temperature sensor /
TS4
condenser
Control panel or temperature
X12
display
X21
Condenser
X28
Service (TTL)
Door contact + fault
X54
indication terminal contact
X60.x M2 terminal contact
Operating Manual DTS and DTI 6X2E Premium Controller X-Series (XC) 086100099e © Pfannenberg GmbH
S1.1
S1.2
Fault
Item
Designation
F1
High-pressure pressostat
H2,H3 LED
LP1
Controller
LP4
PCB PWB adapter
M3
Evaporator fan (internal)
S1.2
Door closed
Temperature sensor
TS1
(internal)
Temperature sensor / anti-
TS5
freeze
X15
Grounding contact
X26
ICSP interface
X40
Ground terminal contact
Modbus RTU interface
X58
(field bus RS485)
X61.x M3 terminal contact
Power cable
Item
Designation
F4
Thermostat
K20
Contactor compressor
LP2
Control panel
M1
Compressor
S1
Door contact
SK
Fault signaling contact (1,2)
Temperature sensor (external)
TS3
/ air intake
U1
Housing/ inverter box
X20
Condenser
X27
Field bus (TTL)
X50
Mains terminal contact
X59
Interface
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