TECSYSTEM T538 - Page 3

3
T538 protection relays
TECSYSTEM S.r.l ®
1) TECHNICAL SPECIFICATIONS
AUXILIARY POWER SUPPLY
Rated voltage 24-240 Vac-dc
Maximum ratings 20.270 Vac-dc
Vdc with reversible polarities
COMMUNICATION
Opt. Output RS232/485 Modbus® RTU
INPUTS
8 inputs RTD Pt100 sensors-3 wires
removable rear terminals
input channels protected against elec-
tromagnetic noises and spikes
sensors length cables compensation
up to 500 m (1mm²)
opt. 8 analog inputs 4-20 mA (range 0-
240°C)
OUTPUTS
2 alarm relays (ALARM-TRIP)
1 alarm relay for sensor fault or working
anomaly (FAULT)
output contacts capacity: 5A-250Vac
res.
Arranged for output relays test
ALARM & TRIP programming for Fail
Safe and NO Fail safe
Opt. Relay AUX.1 (FAN)
TESTS AND PERFORMANCES
Assembling in accordance with CE
rules
Protection against electrical and mag-
netic noises: CEI-EN50081-2/50082-2
Dielectric strength 2500 Vac for 1 min.
from relays to sensors, relays to power
supply, power supply to sensors
Accuracy: ± 1% full scale, ± 1 digit
Ambient operating temperature –20°C
to +60°C
Humidity 90% no-condensing
ABS self-extinguishing housing
NORYL 94VO
Burden 3VA
Data storage 10 years minimum
Digital linearity of sensors signal
Self-diagnostic circuit
Opt. Protection treatment of electronic
part
Opt frontal plastic protection
DISPLAYING AND DATA MANAGEMENT
1display 13mm high 3 digit with 3 digit
for displaying temperatures
8 LED for displaying reference channel
8 LED indicating alarm or trip
LED indicating fault
Temperature monitoring from 0°C to
240°C
2 alarm thresholds for each input
sensors diagnostic (Fcc-Foc-Fcd)
entering the programming by frontal
push button
automatic output from programming cy-
cle after 1 min. of no-operation
wrong programming automatic display
programmed data call out
possibility of setting manual channel
scanning or hottest channel
maximum temperatures storage
number of channels software program-
DIMENSIONS
96x96mm-DIN43700-Prof.150mm
(with rear terminals)
panel cutout 92x92mm
Rated voltage 24-240 Vac-dc
Rated voltage 24-240 Vac-dc
. Output RS232/485 Modbus® RTU
OUTPUTS
2 alarm relays (ALARM-TRIP)
2 alarm relays (ALARM-TRIP)
1 alarm relay for sensor fault or working
1 alarm relay for sensor fault or working
anomaly (FAULT)
anomaly (FAULT)
output contacts capacity: 5A-250Vac
output contacts capacity: 5A-250Vac
res.
Arranged for output relays test
Arranged for output relays test
ALARM & TRIP programming for Fail
ALARM & TRIP programming for Fail
Safe and NO Fail safe
opt. 8 analog inputs 4-20 mA (range 0-
opt. 8 analog inputs 4-20 mA (range 0-
240°C)
LED indicating fault
Temperature monitoring from 0°C to
Temperature monitoring from 0°C to
240°C
96x96mm-DIN43700-Prof.150mm
2 alarm thresholds for each input