User Manual

106 / 216
Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Aggregates 01.04.2010
8.4 Motor
The motor block controls and monitors all motor functions. Six independent motor
blocks are available.
There are 3 different types:
 1-speed motor (pump, fan)
 2-speed motor (fan)
 Twin motor (twin motor, twin pump)
Inputs
Outputs
Input Section Output Section
Precommand checkback signal
8.4.9
Precommand 8.4.8
V
Flow signal
8.4.6
AB
Motor A, Motor B output 8.4.1
AB
Motor A-, Motor B-Overload signal
8.4.7
Motor operating state 8.4.10
2
1
Start
Start condition 1, Start condition 2
8.4.12
Motor fault 8.4.11
12
Stop
Stop condition 1, Stop condition 2
8.4.12
For optimum control and supervision, the motor block in RMS705B offers the
following functions for all motor types:
 Adjustable delay times (Section 8.4.5).

Switch-on to outside temperature for 1-speed motor and twin motor
(Section 8.4.13).

Selectable motor kick (Section 8.4.14).

Assignable text (Section 8.4.17).

Assignable fault texts (various sections).
 Operating hours count (Section 8.4.18).
Purpos
e
Explanation of symbols
Control and supervision
functions