Micromaster Eco; Midimaster Eco - Siemens MICROMASTER Eco Reference Manual

Hvac-frequency inverter
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ECO REFERENCE MANUAL
CONTROL CONNECTIONS (ALL MODELS)
GENERAL INFORMATION
Use screened cable for the control cable, Class 1
60/75 °C copper wire only (for UL compliance).
Tightening torque for the field wiring terminals is
1.1 Nm.
Do not use the internal RS485
connections (terminals 24 and 25) if
you intend using the external RS485
D-type connection on the front panel
(e.g. to connect a Clear Text
Display/option (OPe).
DIP switches select between voltage (V) and
current (I) analogue speed setting inputs. They
also select between either a voltage or current
PID feedback signal. These switches can only be
accessed when:
• for Frame sizes 4, 5 and 6, the front cover is
removed.
• for Frame size 7, the lower front cover is
removed.
• for Frame sizes A, B, C, the flap on the front
cover is open.

MICROMASTER Eco

Insert a small screwdriver in the slot above the
terminal, whilst inserting control wire from below.
Withdraw the screwdriver to secure the wire.

MIDIMASTER Eco

Control connections to the MIDIMASTER Eco are
made via two terminal blocks located on the
control panel. The terminal blocks are of a two-
part design. The part containing the screw
terminals can be unplugged from its housing
before wires are connected. When all
connections to the terminals have been secured,
the terminal block must be plugged firmly back
into its housing.
10-7

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