G85139-H1751-U529-D1G85139-H1751-U529-D1
© Siemens plc 1999© Siemens plc 1999
Control connections to the MIDIMASTER Vector are made via two terminal blocks located as shown in FigureControl connections to the MIDIMASTER Vector are made via two terminal blocks located as shown in Figure
3.2.1. The terminal blocks are of a two-part design. The part containing the screw terminals can be unplugged3.2.1. The terminal blocks are of a two-part design. The part containing the screw terminals can be unplugged
from it’s housing before wires are connected. When all connections to the terminals have been made (from it’s housing before wires are connected. When all connections to the terminals have been made (
shown in Figures 3.2.1 and 3.2.2shown in Figures 3.2.1 and 3.2.2
) and secured, the terminal block must be plugged firmly back into it’s housing.) and secured, the terminal block must be plugged firmly back into it’s housing.
Power SupplyPower Supply
for PID Feedbackfor PID Feedback
(+15 V, max. 50 mA)(+15 V, max. 50 mA)
Power SupplyPower Supply
(+10 V, max. 10 mA)(+10 V, max. 10 mA)
-10 V to +10 V-10 V to +10 V
(input impedance 70 k(input impedance 70 k
(Resistance = 300(Resistance = 300
Output Relays (RL1 and RL2)Output Relays (RL1 and RL2)
max. 0.8 A / 230 V ACmax. 0.8 A / 230 V AC
(overvoltage cat.2)(overvoltage cat.2)
2.0 A / 30 V DC2.0 A / 30 V DC
(resistive rating)(resistive rating)
Digital InputsDigital Inputs
(7.5 - 33 V, max. 5 mA)(7.5 - 33 V, max. 5 mA)
Control TerminalsControl Terminals
use with terminal 13use with terminal 13
Digital InputsDigital Inputs
(7.5 - 33 V, max. 5 mA)(7.5 - 33 V, max. 5 mA)
Motor temp.protection inputMotor temp.protection input
(for USS protocol)(for USS protocol)
5V(max.250mA)5V(max.250mA)
Do not use the internal RS485 connections (terminals 24 and 25) if you intend using the externalDo not use the internal RS485 connections (terminals 24 and 25) if you intend using the external
RS485 connection on the front panel e.g. to connect an Clear Text Display (OPM2).RS485 connection on the front panel e.g. to connect an Clear Text Display (OPM2).
DIP switches DIP switches
select between select between
) analogue inputs. They also select between either a) analogue inputs. They also select between either a
voltage or current PID feedback signal (voltage or current PID feedback signal (
see Figure 4.1.2: DIP Selector Switchessee Figure 4.1.2: DIP Selector Switches
). These switches can only be). These switches can only be
accessed when:accessed when:
(see Figure 3.2.1).(see Figure 3.2.1).
see Figure 3.2.1see Figure 3.2.1
3.2.3 Motor Overload Protection3.2.3 Motor Overload Protection
When operated below rated speed, the cooling effect of fans fitted to the motor shaft is reduced. so that mostWhen operated below rated speed, the cooling effect of fans fitted to the motor shaft is reduced. so that most
motors require de-rating for continuous operation at low frequencies. For protection measures using a PTC seemotors require de-rating for continuous operation at low frequencies. For protection measures using a PTC see
section 2.2.5.section 2.2.5.
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