User Manual

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Building Technologies Division CC1N7491en
18.07.2018
Connectors list (cont´d)
No.
Connector
type
Pin code
print on
PCB
Description LMU34.2
X9
Molex
2599 4 poles
HT: Cable length ′ 1 m
1 CH timer supply N
< 5 mA AC
cosι = 1
2 CH timer contact OUT
External voltage-free contact or bridge in series to room
thermostat input
3 CH timer supply L
< 5 mA AC
cosι = 1
4 CH timer contact IN
External voltage-free contact or bridge in series to room
thermostat input
X200
PCB edge
connector
PELV: PC tool interface (OCI490) OCI490 / ACS420
1 Internal
2 Internal
3 Internal
4 Internal
5 Internal
X301
4
)
Molex
1008-5031
3 poles, coded
HT:
Cable length ′40 m
1 Relay NC contact
Changeover contact for control of heating circuit zone pump
/ alarm message
NO contact closed when there is a heat request from
QAA73… / alarm
NC contact closed when there is no heat request from
QAA73… / alarm
2 Relay NO contact
3 Relay COM contact
HT: High Tension – Mains voltage connection
PELV: Protective Extra Low Voltage – Low voltage connection
The unit is supplied with the temperature setpoint potentiometer in the OFF position.
¹) Only use components approved by Siemens AG!
²) A special conversion list (hard copy) must be used to retrieve correct measurement
values and to set correct threshold values to related functions
³) The fan must meet the requirements of specification
LMU5x_TrafoFan_en_V1.2.doc, chapter 3 “Specification for fans with mains voltage
operated DC motor”
4
) Depending on the type of LMU34