2022_05 SAM_EN | 01 31
6.2 Connection of SAM and meter
Please observe the following safety instructions before connecting the unit.
Specifications for the electrical connection
• The supply line must be hard-wired into the existing installation and comply with the nationally applicable
legal requirements.
• The rated current I
N
must be selected to match the back-up fuse and the circuit breaker.
• When designing the supply line, take into account the increased ambient temperatures inside a charging
station or possible reduction factors. Increased line cross-sections may be necessary to adapt the
temperature resistance of the supply line.
When connecting the meter, there is a risk of fire if the connection cables have too high an internal resistance!
Connecting the SAM to the controller
SAM Controller
Figure 26: Wiring diagram SAM 20 mA interface to the controller
The pin assignment of the SAM is listed in the Connections chapter.
For the pin assignment of the controller, please refer to the corresponding operating instructions of the
controller.
The SAM as well as the meter must be connected when the system is de-energised.
The mounting position does not affect the functionality.
The tightening torque of the terminal screws 3 Nm (M6) must be observed.
The recommended conductor cross-section for connecting the meter is: Q3MB1020 (Imax = 60A) = 16mm²
Damage to property may occur due to incorrect connection!
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