Electrical Data; Transmitter; Lcd Indicators; Installation Instructions - ABB TTH300 Operating Instructions Manual

2.3

Electrical data

2.3.1

Transmitter

Intrinsic safety type of protection Ex ia IIC (part 1)
TTH300-E1H
TTH300-H1H
Supply circuit
max. Voltage U = 30 V
i
Short-circuit current I = 130 mA
i
max. Performance P = 0.8 W
i
Internal inductance L = 0.5 mH
i
Internal capacitance C = 0.57 nF
i
1) FISCO in accordance with 60079-27
2) II B FISCO: Ii ≤ 380 mA, Pi ≤ 5.32 W
3) Only applies to HART variants. From HW rev. 1.07, previously 5 nF
Intrinsic safety type of protection Ex ia IIC (part 2)
Measurement circuit:
resistance thermometer,
resistances
max. Voltage U = 6.5 V
o
Short-circuit current I = 25 mA
o
max. Performance P = 38 mW
o
Internal inductance L = 0 mH
i
Internal capacitance C = 49 nF
i
Maximum permissible L = 5 mH
o
external inductance
Maximum permissible C = 1.55 μF
o
external capacitance
Intrinsic safety type of protection Ex ia IIC (part 3)
LCD indicator interface
max. Voltage
Short-circuit current
max. Performance
Internal inductance
Internal capacitance
Maximum permissible external
inductance
Maximum permissible external
capacitance
2.3.2

LCD indicators

Intrinsic safety type of protection Ex ia IIC
Supply circuit
Max. voltage
Short-circuit current
Max. power
Internal inductance
Internal capacitance
TTH300-E1P/-H1P
TTH300-E1F/-H1F
Supply circuit 1)
FISCO ENTITY
U ≤ 17.5 V U ≤ 24.0 V
i i
2)
I ≤ 183 mA I ≤ 250 mA
i i
P ≤ 2.56 W 2) P ≤ 1.2 W
i i
L ≤ 10 μH L ≤ 10 μH
i i
3) C ≤ 5 nF C ≤ 5 nF
i i
Measurement circuit:
thermocouples,
voltages
U = 1.2 V
o
I = 50 mA
o
P = 60 mW
o
L = 0 mH
i
C = 49 nF
i
L = 5 mH
o
C = 1.05 μF
o
U = 6.2 V
o
I = 65.2 mA
o
P = 101 mW
o
L = 0 mH
i
C = 0 nF
i
L = 5 mH
o
C = 1.4 μF
o
U = 9 V
i
I = 65,2 mA
i
P = 101 mW
i
L = 0 mH
i
C = 0 nF
i
2.4

Installation instructions

2.4.1

ATEX / IECEx

The installation, commissioning, maintenance and repair of
devices in potentially explosive atmospheres must only be
carried out by appropriately trained personnel. Works may be
carried out only by persons, whose training has included
instructions on different types of ignition protection types and
installation techniques, concerned rules and regulations as
well as general principles of zoning. The person must possess
the relevant expertise for the type of works to be executed.
When operating with combustible dusts, EN 60079-31 must
be complied with.
The safety instructions for electrical apparatus in potentially
explosive areas must be complied with, in accordance with the
directive 2014/34/EU (ATEX) and e.g. IEC
60079-14 (Installation of equipment in potentially explosive
atmospheres).
To ensure safe operation, the respectively applicable
requirements must be met for the protection of workers.
2.4.2

IP protection rating of housing

The temperature transmitter and LCD indicator types A and
AS must be installed such that the IP rating of at least IP20 is
achieved in accordance with IEC 60529.
TTH300 | OI/TTH300-EN Rev. D 7