ABB TTF300 User Manual

TTF300 FIELD-MOUNT TEMPERATURE TRANSMITTER | OI/TTF300-EN REV. I 9
Intrinsic safety type of protection Ex ia IIC (Part 2)
TTF300
-E1P, TTF300-H1P, TTF300-E1F, TTF300-H1F measurement current
circuit model
Resistance
thermometers,
resistors
Thermocouples, voltages
Max. voltage
U
o
= 6.5 V
U
o
= 1.2 V
Short
-circuit current I
o
= 25 mA
I
o
= 50 mA
Max. power
P
o
= 38 mW
P
o
= 60 mW
Internal inductance
L
i
≈ 0 mH (negligible)
L
i
≈ 0 mH (negligible)
Internal capacitance
C
i
= 49 nF
C
i
= 49 nF
Maximum permissible
external inductance
L
o
= 5 mH
L
o
= 5 mH
Maximum permissible
external capacitance
C
o
= 1.55 μF
C
o
= 1.05 μF
Intrinsic safety type of protection Ex ia IIC (Part 3)
LCD indicator interface
Max. voltage
U
o
= 6.2 V
Short
-circuit current I
o
= 65.2 mA
Max. power
P
o
= 101 mW
Internal inductance
L
i
≈ 0 mH (negligible)
Internal capacitance
C
i
≈ 0 nF (negligible)
Maximum permissible external
inductance
L
o
= 5 mH
Maximum permissible external
capacitance
C
o
= 1.4 μF
Type of protection: flameproof (enclosure) Ex db IIC
Supply circuit
Maximum voltage
U
S
= 30 V
Maximum current
I
s
= 32
mA, limited by the
upstream
fuse
(rated fuse current 32 mA)
Measurement current circuit
Maximum voltage
U
O
= 6.5 V
Maximum current
I
O
= 17.8 mA
Maximum power
P
O
= 39 mW
Type of protection: dust explosion protection
Ex tb IIIC T135°C Db, Ex tc IIIC T135°C Dc
Non-intrinsically safe power supply
Supply circuit
Maximum voltage
U
S
= 30 V
Maximum current
I
s
= 32
mA, limited by the
upstream
fuse
(rated fuse current 32
mA)
Measurement current circuit
Maximum
permissible power
dissipation in the measuring inset
(sensor)
P
i
= 0.5 W
Intrinsically safe power supply
If in the dust explosion protection type of protection, the
transmitter is supplied with power from a power supply unit
which is designed as intrinsically safe in the ‘Ex ia’ or ‘Ex ib’ type
of protection, a limitation of the power supply circuit by an
upstream fuse is not required.
In this case, the electric data of the transmitter for the intrinsic
safety type of protection Ex ia IIC (Part 1) for TTF300-E1H and
TTF300-H1H, Ex ia IIC (Part 2) as well Ex ia IIC (Part 3) should be
complied with.
Refer to Intrinsic safety type of protection Ex ia IIC (Part 1) on
page 8.
LCD indicator
Intrinsic safety type of protection Ex ia IIC
Supply circuit
Max. voltage
U
i
= 9 V
Short-circuit current
I
i
= 65.2 mA
Max. power
P
i
= 101 mW
Internal inductance
L
i
≈ 0 mH (negligible)
Internal capacitance
C
i
≈ 0 nF (negligible)

ABB TTF300 Specifications

General

Brand	ABB
Model	TTF300
Category	Transmitter
Language	English