Nastec SUND, Instructions For Installation, Use And Maintenance Manual

Page: 18 / 40

7.5.2. Control connections
Type Description Functionality Comments
Analog inputs AN1 4-20 mA Sensor 1 -
AN2 4-20 mA Sensor 2 -
AN3 0-10 V External set value
AN4 0-10 V External frequency
External set value 2
Power Supply +15V 15 VDC, max 100 mA Power supply for 4-20 mA ana-
log inputs Do not use as a power supply for
the digital inputs!
Power Supply +10V 10 VDC, max 3 mA Power supply for 0-10 V analog
inputs Do not use as a power supply for
the digital inputs!
Signal GND 0V Insulated Signal GND for analog and digi-
tal inputs -
Digital inputs IN1 Active low Motor start and stop Programmable as Normally Open
or Normally Closed.
IN2 Active low Motor start and stop
Switching of set value 1 and 2
Switching of work frequency 1
and 2
Programmable as Normally Open
or Normally Closed.
IN3 Active low Motor start and stop
Switching of sensors 1 and 2
Programmable as Normally Open
or Normally Closed.
IN4 Active low Alarms reset
Motor start and stop
Switch between main and auxili-
ary control modes
Programmable as Normally Open
or Normally Closed.
Relay outputs NO1 Normally Open STATUS relay
NO1, COM1: closed contact
with motor running.
NC1, COM1: closed contact
with motor stopped.
Potential-free contacts
Max 250 VAC, 2 A
Max 30 VDC, 2 A
COM
1 Common
NC1 Normally Closed
Relay outputs NO2 Normally Open ALARM relay
NO2, COM2: closed contact
without alarm.
NC2, COM2: closed contact
with alarm or without power
supply.
Potential-free contacts
Max 250 VAC, 2 A
Max 30 VDC, 2 A
COM
2 Common
NC2 Normally Closed
RS485 serial port S1+ Positive Communication
COMBO
-
S1- Negative -
G Serial GND The serial GND is isolated from the
signal GND
RS485 serial port S2+ Positive Communication
MODBUS RTU
-
S2- Negative -
G Serial GND The serial GND is isolated from the
signal GND
8. Commissioning
8.1. Preliminary checks
Before supplying power to the device, carry out the following electrical and mechanical checks:
• Verify proper grounding of the device, of the load, and of the entire system.
• Check the correct connection of the power supply cable and the motor cable, paying particular attention to any
connection reversal.
• Check the correct connection of the power and signal cables, paying particular attention to any polarity.
• Check that the connection terminals of the power and signal cables are correctly tightened.
SUND
18