Detection of cutline or short circuit line in the temperature sensors or 4÷20mA, 0÷20mA (sensor failure) in each
channel
ΡΤ100 and 4÷20mA: In case of cutline or short circuit line, the general relay is activated and the corresponding input’s LED is flashing.
Specifically:
1.
ΡΤ100 3 cables: a) short circuit line: the general relay is activated, the corresponding input’s LED is flashing and the screen displays
OV F.
b) cutline in the sensor’s cable: the general relay is activated, the corresponding input’s LED is flashing and the screen displays
OV F.
c) cutline in the compensation’s cable: the general relay is activated, the corresponding input’s LED is flashing and the screen
displays WR C.
2.
ΡΤ100 2 cables:
cutline
or short circuit line: the general relay is activated, the corresponding input’s LED is flashing and the screen
displays OV F.
3.
4÷20mA:
cutline
or short circuit line: the general relay is activated, the corresponding input’s LED is flashing and the screen displays
OV F.
Thermocouple J, K and 0÷20mA: In case of cutline the general relay is activated and the corresponding input’s LED is flashing.
Specifically:
3. Thermocouple J, K: a) cutline: the general relay is activated, the corresponding input’s LED is flashing and the screen displays OV F.
b) short circuit line: short circuit alarm corresponds to 0
o
C and the reception of the alarm can be adjusted by the parameters.
4.
0÷20mA: a)
cutline
: the general relay is activated, the corresponding input’s LED is flashing and the screen displays OV F.
b) short circuit line: short circuit alarm corresponds to 0mA and the reception of the alarm can be adjusted by the parameters.
Power failure setup
An internal relay 250VAC 10A with one contact (terminal blocks 34, 35) is available to set up an external alarm circuit in case main power
supply fails. When the device is powered on, the said auxiliary contact will open and when power failure occurs the same contact will
close, therefore an external alarm circuit with a separate power supply will also close and consequently, an audible and/or visual alarm will
be triggered
Internal fuses
Internal power supply fast blow fuse: 1A
Internal fast blow fuse in the outputs: 315mA
Internal fast blow fuse in the network’s communication: 315mA
ATTENTION to prevent electrostatic discharges at the side slots of the device and insertion of sharp objects
ATTENTION: separate the signal cables from the power supply cables to prevent electromagnetic disorders.
Signal cables must never be in the same pipe with the power supply cables.
Read and keep these instructions. The device is under a two years’ good operation guarantee. The guarantee is valid provided the
manual instructions have been applied. Check and service of the device must be performed by an authorized technician. The
guarantee covers only the replacement or the service of the device.
V1.6.220517
preserves the right to adjust its products without further notice
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