TECSYSTEM NT935-4 - Electrical Connections (AD)

12
NT935-4
ASERIES
NT935-4 AD
1)
Pt100 sensors (white-red-red)
3)
Relays (FAN2-FAN1-ALARM-TRIP-FAULT)
2)
Supply 24-240Vac-dc 50/60Hz.
4)
Output 4.20 mA
5)
Modbus RTU RS485 output
SCREEN RED RED WHITE
ELECTRICAL CONNECTIONS
5
1
2
3
4
1MN0095 REV. 0
Output relay with 10A-250Vac-res COSФ=1 contacts.
COSФ=1.
STOP
SYSTEM
ALARM
CONDITION AUDIO AND
VISUAL INDICATION
Pt100 CONNECTION EXAMPLE
Note: before connecting the
sensors to the control unit, read
the Measurement signal transfer
paragraph on page 16.
Note: relay contact image in non-alarm condition, with the exception of the FAULT relay that opens: contacts 11-12
open (NO) contacts 11-12 closed (NC) fault condition identification. Read the Alarms and Ventilation paragraph on
page 13 and see the opening of the fault contact.
RELAY CONNECTION EXAMPLE