1. Cable 20 x AWG 20/19 Cu/Sn
2. Section 0.55 mm²
3. Flame-protection insulation PVC105
4. Standards CEI 20.35 IEC 332.1
5. Maximum operating temperature: 90°C
6. Configuration: 4 triples of three twisted and coloured conductors
7. Screen on Cu/Sn
8. Fireproof PVC sheath
9. Outer diameter 12 mm
10. Standard configuration in 100 m coils
The NT935 WS has n.o selection (contact open)/ n.c (normally closed contact) for ALARM, TRIP and FAULT relays,
programming steps 30 to 35 page 14. The selection of the setting YES/NO introduces functions Fail Safe and No Fail Safe.
ALARM AND TRIP
Setting NO (NO Fail safe) normally open contacts are in positions 5-7 Alarm and 8-10 Trip, they switch only when limits are
reached preset temperature.
Setting YES (Fail Safe) normally closed contacts are in positions 5-7 Alarm and 8-10 Trip, they switch only when limits are
reached preset temperature or for device's power supply lack.
FAULT
Setting YES (Fail safe) the contact 11-12 is positioned as normally open, switches (closed) when a fault condition is
identified; see section on page 12 alarms and ventilation.
Setting NO (NO Fail safe) the contact 11-12 is positioned as normally closed, switches (open) when a fault condition is
identified; see section on page 12 alarms and ventilation.
Disabling the failsafe function on the fault contact, the unit will no longer be able to report the fault for lack of power. In this
case it is suggested that the enabling of the fail safe on the ALARM contact for the above indication.
NOTE: When the unit is located in one of the methods described below does not monitor heat, also the relay will all be
banned, the FAULT led start blinking.
• Vis. display programming.
• PRG programming.
• Test of the relays.
The FAIL SAFE is temporarily disabled The FAULT relay switches.
ATTENTION: accessing at the relay test mode will temporarily disable the failsafe function, the relays with function
enabled switch (ALARM-TRIP-FAULT).
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