Siemens Midimaster Eco - Page 72

ECO REFERENCE MANUAL
11-7
EG
EXAMPLE 7
LOCAL POTENTIOMETER/REMOTE BMS SELECTION FROM FRONT OF MCC
PANEL
A fan is to be speed controlled locally, using a potentiometer on the motor control panel to
provide the control signal, or, remotely using an external 4 - 20 mA current signal. The local or
remote control is set via a keyswitch on the motor control panel. An additional run/stop contact
is provided within the motor control panel.
All settings based on factory settings with the following exceptions :
PARAMETER CHANGES FROM FACTORY DEFAULTS
SETTING DESCRIPTION
P006 = 1 SELECT ANALOG SET POINTS
P007 = 0 SELECT RUN/STOP VIA DIGITAL INPUT TERMINALS
P053 = 24 SWITCH BETWEEN ANALOG SPEED SETPOINT (LOCAL
POTENTIOMETER) AND SETPOINT 2 (REMOTE BMS)
L1
20
9
5
10
11
7
1
3
4
L2 L3
VUW
FUSES
M
A
D
MICROMASTER Eco
MIDIMASTER Eco
MOTOR CONTROL PANEL
FAULT CONTACT
CLOSED = HEALTHY
19
MAIN CONTACTOR
2
0-20mA
B
C
E
BUILDING MANAGEMENT SYSTEM
(BMS)
(MCC)
L1
L2
L3
N
PE
DIP SWITCHES
ITEM DESCRIPTION
A REMOTE RUN/STOP COMMAND FROM BMS
B REMOTE 0 - 20 mA SPEED SETTING SIGNAL FROM BMS
C KEYSWITCH ON MCC PANEL TO SELECT BETWEEN
LOCAL AND REMOTE (SHOWN IN LOCAL)
D LOCAL SPEED SETTING POTENTIOMETER ON MCC
PANEL
E LOCAL RUN/STOP CONTACTS WITHIN MCC PANEL