Herunterladen Inhalt Inhalt
Teilen
Diese Seite drucken
  1. Anleitungen
  2. Marken
  3. Mettler Toledo Anleitungen
  4. Terminals
  5. IND570xx
  6. Installationsanleitung

Non-Incendive And Intrinsically Safe [Ic] Inputs And Outputs; Analog Load Cell - Mettler Toledo IND570xx Installationsanleitung

Vorschau ausblenden
Inhaltsverzeichnis

Werbung

Verfügbare Sprachen
  • DE

Verfügbare Sprachen

  • DEUTSCH, seite 74
2.2.
Non-incendive and Intrinsically Safe [ic] Inputs and
Outputs
If a specific connection is rated non-incendive (NI) for Division 2 or intrinsically safe [ic] for Zone
2/22, then a list of the field circuit parameters or entity values for that connection will be given on
the control drawing or certificate. If an approved apparatus will be connected to a non-incendive or
intrinsically safe [ic] connection, then a comparison must be made between the electrical field
circuit parameters or entity values of both devices including the connecting cable. These field circuit
parameters or entity values include voltage, current, capacitance and inductance. Power is not
required in the comparison of a Division 2 or Zone 2/22 non-incendive or intrinsically safe [ic]
application.
The two devices must compare as follows in order for the wiring to be considered non-incendive:
The field circuit parameters or entity values associated with the IND570xx terminal are underlined in
the above formulas. The other parameters are related to the other approved apparatus or the
connecting cable.
If any of the above conditions are not true, then the circuit must be treated as an incendive or non-
intrinsically safe connection and protected accordingly. If the parameters compare favorably as
shown above, then no special protection is required for the wiring. Always refer to the electrical
regulations for the country of installation for specific wiring requirements.
2.2.1.

Analog Load Cell

The analog load cell connection is rated non-incendive and intrinsically safe [ic] on the IND570xx
terminal. The non-incendive field circuit wiring (NIFW) and intrinsically safe [ic] entity parameters
are listed here:
30205321
|
05
|
03/2019
U
or V
(Maximum voltage permitted) ≥ U
i
max
I
or I
(Maximum current permitted) ≥ I
i
max
C
(Input capacitance) + C
i
cable
L
(Input inductance) + L
i
METTLER TOLEDO IND570xx Division 2 and Zone 22 Installation Manual
(Cable capacitance) ≤ C
(Cable inductance) ≤ L
cable
NIFW/Entity
V
/U
= 10.5 VDC
oc
o
I
/I
= 304 mA
sc
o
C
/C
= 1 µF
a
o
L
/L
= 0.6 mH
a
o
or V
(Total voltage output)
o
o
or I
(Total current output)
o
sc
or C
(Allowable capacitan
a
o
or L
(Allowable inductanc
a
o
2-5
Quicklinks anzeigen

Quicklinks ausblenden:

Werbung

Inhaltsverzeichnis
loading

Verwandte Anleitungen für Mettler Toledo IND570xx

Verwandte Inhalte für Mettler Toledo IND570xx

Diese Anleitung auch für:

Ind570 serie

Inhaltsverzeichnis