MTU 12 V 2000 P12 Operating Instructions Manual page 45

Electrical requirements
Term
Operating voltage:
Power supply:
Power connection terminals:
Electrical isolation:
Mechanical design
Term
Installation position
Signal connections
The SAM module is easily replaced. The input and output signal cables are equipped with modular con‐
nectors. Common function channels are grouped together.
The wires are connected using spring terminals.
It is possible to connect two wires to one terminal if the wires are connected in a double core sleeve
using crimp technology. For example, a Phoenix AL-TWIN 2* 0.75-10 may be used.
The connector modules are connected by clicking them in place. The connector modules have code pins
to prevent polarity reversal.
Unit Value
V 24, -30 % to +30 % (+16.8 – +32)
Permissible residual ripple less than 5% acc. to STA‐
NAG 1008.
Note: The processor is automatically reset if the voltage
falls below 7 V.
W Below 7 W.
Without activated loads at SAM outputs
Additional output power amperage of positive or nega‐
tive line may not exceed 10 A DC.
mm 5.08 terminals (spring-type terminals)
• A wire diameter of AWG14 (US) or 2.5 mm
mended.
V • Supply ground is common reference potential (Com‐
mon Ground) for all SAM electronics.
This applies to the entire I/O range with the exception
of certain electrically isolated channels.
• SAM electronics ground is not connected to housing
ground.
• If signal cable shields are used, these must be con‐
nected to housing ground.
• Unless specified otherwise, the maximum DC insula‐
tion voltage is 500.
Unit Value
• Horizontal (to ensure visibility of the fault display and
labels on the SAM housing).
• Note that space is required to connect cabling at the
top and bottom when installing the SAM in control
cabinets.
• The device heats up as a result of power loss from
the SAM. Heat from the SAM is dissipated through
the rear panel.
Ensure that heat can be conducted away from the
rear panel of the SAM to the mounting frame. Avoid
any additional heating of the SAM by neighboring de‐
vices.
MS150025/02E 2012-10 | Technical Data | 45
is recom‐
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