West Control Solutions TB 40-1 Temperature Limiter - Manual (Page 25)

9 Technical data
INPUTS
PROCESS VALUE INPUT INP1
Resolution: > 14 bits
Decimal point: 0 to 3 digits behind the decimal point
Dig. input filter: adjustable 0,000...9999 s
Scanning cycle: 100 ms
Measured value
correction: 2-point or offset correction
Thermocouples
r
Table 1 (page 27 )
If the device is used as a teperature limiter, a
double thermocouple must be connected. For
measurements in the area of ambient
temperature (0mV) the plausibility is ensured
by the control of the 2nd thermocouple.
Outside of this range there is no check of the
2nd thermocouple.
Input resistance:
³ 1 MW
Effect of source resistance: 1
mV/W
Cold-junction compensation
Maximal additional error:
± 0,5 K
Sensor break monitoring
Sensor current:
£1 mA
Configurable output action
Resistance thermometer
r
Table 2 (page 27 )
Connection: 2 or 3-wire
Lead resistance: max. 30 Ohm
Input circuit monitor: break and short circuit
Special measuring range
BlueControl (engineering tool) can be used to
match the input to sensor KTY 11-6
(characteristic is stored in the controller).
Physical measuring range: 0...4500 Ohm
Linearization segments 16
Current and voltage signals
r
Table 3 (page 27 )
Span start, end of span: anywhere within measuring range
Scaling:
selectable -1999...9999
Linearization: 16 segments, adaptable with
BlueControl
Decimal point: adjustable
Input circuit monitor: 12,5% below span start (2mA, 1V)
CONTROL INPUT DI1
Configurable as switch or push-button!
Connection of a potential-free contact suitable
for switching “dry” circuits.
Switched voltage: 2,5 V
Current: 50
mA
GALVANIC ISOLATION
Safety isolation
Function isolation
OUTPUTS
OUTPUT LC
Function:
Interruption of the power supply if the set limit
is exceeded or fallen short.
Contact type: potential-free changeover contact
Max.contact rating: 500 VA, 250 V, 2A at 48...62 Hz,
resistive load
Min. contact rating: 5V, 10 mA AC/DC
Operating life (electr.): 600.000 duty cycles with max.
contact rating
If the device is used as temperature limiter
(configuration date
Fcn.1 = 7 or 8) the bridge
between clamps 6 and 7 must not be removed!
The bridge ensures the safe interruption of power by
serial switching of the relays LC and OUT2. If the
device is utilized as temperature monitor
(configuration date Fcn.1 = 5 or 6) the bridge
can be removed, the break is only via LC relay
OUTPUTS OUT1, OUT2
Function:
Additional alarms with MAX, MIN or MAX+MIN
monitoring with adjustable hysteresis.
Monitored signals:
w
process value (absolut)
w
difference to the limit (relative)
w
sensor break / short circuit
According to the input type, the input signal is
monitored to sensor break, polarity error and
short circuit
Technical data
TB40-1 25
Power supply connections Process value input INP1
Digital input di1
Relay outputs OUT 1,2
Relay output OUTLC