Fisher IM Supplement: CSA Hazardous Area Approvals - FIELDVUE DLC3020f Digital Level Controller Manuals & Guides

Instruction Manual Supplement

D104408X012

CSA Hazardous Area Approvals

™

Fisher

FIELDVUE™ DLC3020f Digital Level

DLC3020f Digital Level Controller

April 2022

Controller for F

OUNDATION

™

Fieldbus

Hazardous Area Classifications and Special Instructions for “Safe
Use” and Installations in Hazardous Locations

Certain nameplates may carry more than one approval, and each approval may have unique installation/wiring
requirements and/or conditions of “safe use”. These special instructions for “safe use” are in addition to, and may
override, the standard installation procedures. Special instructions are listed by approval.

Note

This information supplements the nameplate markings affixed to the product and the DLC3020f quick start guide (D103470X012)
and instruction manual (D103434X012

Always refer to the nameplate itself to identify the appropriate certification.

WARNING

Failure to follow these conditions of “safe use” could result in personal injury or property damage from fire or explosion, or
area re‐classification.

), available from your Emerson sales office or Fisher.com.

Intrinsically Safe, Explosion‐proof, Division 2, Dust Ignition‐proof

No special conditions for safe use.

Refer to table 1 for approval information.

www.Fisher.com

DLC3020f Digital Level Controller

April 2022

Instruction Manual Supplement

D104408X012

Table 1. Approval Information

Certification Body Certification Obtained Entity Rating Temperature Code

Fieldbus

CSA

RTD Terminals

Voc = 6.6 VDC
Isc = 29.5 mA
Po = 49 mW

= 22 μF

Intrinsically Safe
Class I, II, III Division 1 Groups A,B,C,D,E,F,G
T4 per drawing GE37118 (see figure 1)

Explosion‐proof
Class I Division 1 Groups B,C,D T6

Class I Division 2 Groups A,B,C,D T6 - - - - - - T6 (Tamb ≤ 80_C)
Dust Ignition‐proof

Class II Division 1,2 Groups E,F,G T6

Class III - - - - - - T6 (Tamb ≤ 80_C)

Ca

= 40 mH

La

RTD Terminals

Voc = 6.6 VDC
Isc = 29.5 mA
Po = 49 mW

= 22 μF

Ca

= 40 mH

La

- - - - - - T6 (Tamb ≤ 80_C)

- - - - - - T6 (Tamb ≤ 80_C)

Main Circuit Terminals

= 24 VDC

Vmax

= 380 mA

Imax

= 1.4 W

Pi
Ci = 5 nF
Li = 0.55 mH

FISCO

Main Circuit Terminals

= 17.5 VDC

Vmax

= 380 mA

Imax

= 5.32 W

Pi
Ci = 5 nF
Li = 0 mH

T4 (Tamb ≤ 80_C)

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Instruction Manual Supplement

D104408X012

Figure 1. CSA Schematic — Drawing GE37118 (Refer to figure 2 for Notes)

HAZARDOUS LOCATION NON‐HAZARDOUS LOCATION

I.S. CLASS I,II,III DIVISION 1, GROUPS A,B,C,D,E,F,G

N.I. CLASS I, DIVISION 2, GROUPS A,B,C,D

DLC3020F

NOTE 7 1

CSA APPROVED

ENTITY DEVICE

NOTE 1, 3 1

RTD

DEVICE

RTD

TERMINALS

Voc = 6.6 VDC
Isc = 29.5 mA
Po = 49 mW
Ca = 22 mF
La = 40 mH

MAIN CIRCUIT

TERMINALS

Vmax = 24 VDC
Imax = 380 mA
Pi = 1.4 W
Ci = 5 nF
Li = 0.55 mH

DLC3020f Digital Level Controller

April 2022

CSA APPROVED

BARRIER

1 NOTE 1, 3, 4, 5, 6

1 REFER TO FIGURE 2 FOR NOTES

CSA APPROVED

FISCO DEVICE

NOTE 2, 3 1

CSA APPROVED

FISCO

TERMINATOR

1 REFER TO FIGURE 2 FOR NOTES

GE37118

FOR FIELDBUS INSTALLATION

I.S. CLASS I,II,III DIVISION 1, GROUPS A,B,C,D,E,F,G

N.I. CLASS I, DIVISION 2, GROUPS A,B,C,D

DLC3020F

RTD

DEVICE

RTD

TERMINALS

Voc = 6.6 VDC
Isc = 29.5 mA
Po = 49 mW
Ca = 22 mF
La = 40 mH

MAIN CIRCUIT

TERMINALS

Vmax = 17.5 VDC
Imax = 380 mA
Pi = 5.32 W
Ci = 5 nF
Li = 0 mH

FOR FISCO INSTALLATION

HAZARDOUS LOCATION NON‐HAZARDOUS LOCATION

CSA APPROVED

FISCO BARRIER

1 NOTE 2, 3, 4, 5, 6

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DLC3020f Digital Level Controller

April 2022

Instruction Manual Supplement

D104408X012

Figure 2. CSA Schematics (Notes)

 THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS TO ASSOCIATED APPARATUS NOT SPECIFICALLY
EXAMINED IN SUCH COMBINATION. THE CRITERIA FOR INTERCONNECTION IS THAT THE VOLTAGE (Vmax or Ui), THE CURRENT (Imax or Ii), AND THE
POWER (Pmax or Pi) OF THE INTRINSICALLY SAFE APPARATUS MUST BE EQUAL TO OR GREATER THAN THE VOLTAGE (Voc or Uo) AND THE CURRENT
(Isc or Io), AND THE POWER (Po) DEFINED BY THE ASSOCIATED APPARATUS. IN ADDITION, THE SUM OF THE MAX UNPROTECTED CAPACITANCE (Ci)
AND MAX UNPROTECTED INDUCTANCE (Li), INCLUDING THE INTERCONNECTING CABLING CAPACITANCE (Ccable) AND CABLING INDUCTANCE
(Lcable), MUST BE LESS THAN THE ALLOWABLE CAPACITANCE (Ca) AND INDUCTANCE (La) DEFINED BY THE ASSOCIATED APPARATUS. IF THE ABOVE
CRITERIA IS MET, THEN THE COMBINATION MAY BE CONNECTED.

Vmax or Ui w Voc or Uo Imax or Ii w Isc or Io Pmax or Pi w Po Ci + Ccable ≤ Ca Li + Lcable ≤ La

 THE FISCO CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS TO ASSOCIATED APPARATUS NOT SPECIFICALLY
EXAMINED IN SUCH COMBINATION. THE CRITERIA FOR THE INTERCONNECTION IS THAT THE VOLTAGE (Vmax or Ui), CURRENT (Imax or Ii) AND
POWER (Pmax or Pi), WHICH AN INTRINSICALLY SAFE APPARATUS CAN RECEIVE AND REMAIN INTRINSICALLY SAFE, CONSIDERING FAULTS, MUST BE
EQUAL TO OR GREATER THAN THE VOLTAGE (Voc or Uo), CURRENT (Isc or Io), AND POWER (Po) LEVELS WHICH CAN BE DELIVERED BY THE
ASSOCIATED APPARATUS, CONSIDERING FAULTS AND APPLICABLE FACTORS. IN ADDITION THE MAXIMUM UNPROTECTED CAPACITANCE (Ci) AND
INDUCTANCE (Li) OF EACH APPARATUS (OTHER THAN THE TERMINATION) CONNECTED TO THE FIELDBUS MUST BE LESS THAN OR EQUAL TO 5 nF
AND 10 uH RESPECTIVELY.

IN EACH SEGMENT ONLY ONE ACTIVE DEVICE, NORMALLY THE ASSOCIATED APPARATUS, IS ALLOWED TO PROVIDE THE NECESSARY ENERGY FOR
THE FIELDBUS SYSTEM. THE VOLTAGE (Uo or Voc or Vt) OF THE ASSOCIATED APPARATUS HAS TO BE LIMITED TO THE RANGE OF 9 V TO 17.5 VDC. ALL
OTHER EQUIPMENT CONNECTED TO THE BUS CABLE HAS TO BE PASSIVE, MEANING THAT THEY ARE NOT ALLOWED TO PROVIDE ENERGY TO THE
SYSTEM, EXCEPT FOR A LEAKAGE CURRENT OF 50 uA FOR EACH CONNECTED DEVICE. SEPARATELY POWERED EQUIPMENT NEEDS A GALVANIC
ISOLATION TO ASSURE THAT THE INTRINSICALLY SAFE FIELDBUS CIRCUIT REMAINS PASSIVE.

THE CABLE USED TO INTERCONNECT THE DEVICES NEEDS TO HAVE THE PARAMETERS IN THE FOLLOWING RANGE:

LOOP RESISTANCE R':
INDUCTANCE PER UNIT LENGTH L:
CAPACITANCE PER UNIT LENGTH C':
C' = C' LINE/LINE + 0.5' LINE/SCREEN, IF BOTH LINES ARE FLOATING OR
C' = C' LINE/LINE + C' LINE/SCREEN, IF THE SCREEN IS CONNECTED TO ONE LINE.
LENGTH OF SPLICE:
LENGTH OF SPUR CABLE:
LENGTH OF TRUNK CABLE:

AT EACH END OF THE TRUNK CABLE AN APPROVED INFALLIBLE TERMINATION WITH THE FOLLOWING PARAMETERS IS SUITABLE:
R = 90 TO 100 ohms AND C = 0 TO 2.2 uF. NOTE, A BUILT‐IN TERMINATOR IS INCLUDED ON THE FIELD SIDE AND A SELECTABLE TERMINATOR IS
AVAILABLE ON THE HOST SIDE.

THE NUMBER OF PASSIVE DEVICES CONNECTED TO THE BUS SEGMENT IS NOT LIMITED IN THE FISCO CONCEPT FOR INTRINSICALLY SAFE REASONS. IF
THE ABOVE RULES ARE RESPECTED, UP TO A TOTAL LENGTH OF 1000 m (SUM OF THE LENGTH OF THE TRUNK CABLE AND ALL SPUR CABLES), THE
INDUCTANCE AND CAPACITANCE OF THE CABLE WILL NOT IMPAIR THE INTRINSIC SAFETY OF THE INSTALLATION.

 INSTALLATION MUST BE IN ACCORDANCE WITH THE CANADIAN ELECTRICAL CODE (CEC) PART 1 AND ANSI/ISA RP12.6

 MAXIMUM SAFE AREA VOLTAGE SHOULD NOT EXCEED 250 Vrms

 RESISTANCE BETWEEN INTRINSICALLY SAFE GROUND AND EARTH GROUND MUST BE LESS THAN ONE OHM.

 LOOPS MUST BE CONNECTED ACCORDING TO THE BARRIER MANUFACTURER'S INSTRUCTIONS

 IF HAND‐HELD COMMUNICATOR OR MULTIPLEXER IS USED IT MUST BE CSA APPROVED WITH ENTITY PARAMETERS AND INSTALLED PER THE

MANUFACTURER'S CONTROL DRAWING

15 TO 150 ohms/km

0.4 TO 1 mH/km
80 TO 200 nF/km

<1 m (T‐BOX MUST ONLY CONTAIN TERMINAL CONNECTIONS WITH NO ENERGY STORAGE CAPABILITY)
<30 m
<1 Km

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson
Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their
respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.

Emerson Automation Solutions

Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Cernay, 68700 France
Dubai, United Arab Emirates
Singapore 128461 Singapore

www.Fisher.com

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