Field Indicator Wiring; Cable Connection - ABB JDF200 Operating Instruction

7 6 Field indicator wiring

7.1 6.1 Cable connection

Warning - General risks. Observe the applicable regulations governing electrical installation. Connections must only be established in a
dead-voltage state. JDF200 field indicator has overvoltage/lightening according to IEC 61326 (higher capacity must be provided at the
plant). Check that the existing operating voltage corresponds to the needed voltage. The same lines are used for both the power supply and
output signal. Furthermore the potential equalization for the entire powering cable must be guaranteed since the intrinsic safety circuit of the
field indicator is grounded.
Electrical shock can result in death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock. Do NOT make electrical connections unless the electrical code designation agrees with the classification of the
area in which the field indicator is to be installed. Failure to comply with this warning can result in fire or explosion.
Access to the signal terminals is gained by removing the integral LCD display.
To remove the LCD, first unscrew the housing cover by turning it. Unplug the LCD by pulling it out gently. On the field indicator
housing two connection ports for cable glands or conduit fittings are provided. These ports are protected with plastic plugs for
transit purpose. The unused port plastic plug must be replaced for Hazardous Area installations with flameproof (explosion proof)
protection (see relevant warning).
M20 x 1.5 or 1/2-14 NPT thread. The screw terminals are suitable for wire cross sections of up to 2.5 mm2 (AWG 14).
Important. With Category 3 field indicators for use in "Zone 2", a qualified cable gland for this type of protection must be installed by the
customer (see the section "Hazardous Area Consideration"). An M20 x 1.5 or 1/2-14 NPT thread is located in the electronics housing for this
purpose. For field indicators with "Flameproof enclosure" (Ex d) type of protection, the housing cover must be secured using the locking
screw. At this point, we wish to draw your attention to the fact that increased force will be required to unscrew the housing cover after an
interval of several weeks. This is not caused by the threads, but instead is due solely to the type of gasket.
Important. For Hazardous Areas installations, at least six (6) threads on the cover must be engaged in order to meet flameproof
(explosion-proof) requirements.
The field indicator can be connected in accordance with the following two configurations:
— Indicator only, i.e. coupled to the transmitter's terminal block.
— Junction box, i.e. inserted in any point of the 4 to 20 mA line connecting the transmitter to its receiver/power supply.
JDF200
Transmitter
Figure 6: Field indicator connection schematics
Depending on the design supplied, the electrical connection is established via a cable entry,
Transmitter
JDF200
JDF200 wiring scheme as remote indicator
Note. Remote indicator wiring scheme not
applicable for 266 pressure transmitters with surge
protection option (code S2).
Note. JDF200 to be used as indicator with all
+
devices ensuring minimum voltage drop on the "ext.
-
meter" terminal.
JDF200 wiring scheme as junction box
+
-
6 Transmitter wiring
2600T Series | OI/JDF200-EN Rev. E 11