Fisher L2e Manuale utente
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Fisher™L2e Electric Level Controller
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 2.................................
Specifications 2...............................
Educational Services 2.........................
Installation 4..................................
Attaching a Vertical Displacer 5..................
Attaching a Horizontal Displacer 5...............
Attaching the Sensor to the Vessel 5.............
Electrical Connections 6........................
L2e Initial Setup (Dry Displacer) 10...............
L2e Zero and Span Adjustment (Wet Displacer) 10..
Principle of Operation 11........................
Maintenance 12................................
Removing the Controller From the Sensor 12......
Installing Sensor Repair Kit (RL2SENSX012) 12.....
Replacing the Complete Controller
Assembly (RL2E0X00C12) 13.................
Related Documents 14..........................
Parts Ordering 14...............................
Figure 1. Fisher L2e Electric Level Controller
X0660
Introduction
Scope of Manual
This instruction manual includes installation, adjustment, maintenance, and parts ordering information for the Fisher
L2e electric liquid level controller.
Do not install, operate or maintain an L2e electric liquid level controller without being fully trained and qualified in
valve, actuator, and accessory installation, operation, and maintenance. To avoid personal injury or property damage,
it is important to carefully read, understand and follow all the contents of this manual, including all safety cautions
and warnings. If you have any questions about these instructions, contact your Emerson Automation Solutions sales
office before proceeding.
Instruction Manual
D103531X012
L2e Controller
March 2017
Instruction Manual
D103531X012
L2e Controller
March 2017
2
Description
The L2e electric liquid level differential gap on-off controller uses a displacement type sensor to detect liquid level or
the interface of two liquids of different specific gravities.
The L2e controls the lower trip point (zero) that closes the dump valve, allowing the vessel to fill to the upper trip
point. Once the upper trip point is reached, the dump valve opens to drain the fluid down to the zero or lower trip
point. The difference between the upper trip point and the zero or lower trip point is called differential gap or DG. The
L2e operates as a two position (on-off) controller.
These controllers use a single pole double throw (SPDT) dry contact electric switch to provide differential gap (DG)
control or liquid monitoring. The controller can be used to provide an electric control signal to an electrically actuated
control valve.
Unless otherwise noted, all NACE references are to NACE MR01752002.
Specifications
Specifications for the controller and sensor are listed in table 1.
Educational Services
For information on available courses for L2e electric liquid level controllers, as well as a variety of other products,
contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: +1-641-754-3771 or +1-800-338-8158
Email: [email protected]
http://www.emersonprocess.com/education
Instruction Manual
D103531X012
L2e Controller
March 2017
3
Table 1. Specifications
Available Configurations
Controller: Differential gap (DG) electric control
action with intuitive Zero and Span Adjustments in
SPDT dry contact configuration (refer to page 2 for
differential gap description)
Sensor: Displacertype liquid level sensor for
mounting to side of vessel
Input Signal
Type: Liquid level or liquidtoliquid interface
Level Change Required for Full Change in State of
Output: 5.0 to 305 mm (0.2 to 12 inches)
Vessel level DG is dependant on factors such as valve
sizing, actuator speed, rate, liquid out flow, and
vessel size. Contact your Emerson Automation
Solutions sales office for Fisher Electric Level Loop
performance optimization.
Specific Gravity Limits
Minimum SG: 0.15
Maximum SG
PVC Displacer: 1.3
SST Displacer: 1.1
Electrical Rating (Output)
Jeasy-Drive™ actuator application: 7 mA@5 VDC
JOther applications: 1 amp resistive, 0.5 amp
inductive/28 VDC
Note: Use with easy-Drive after first being used in
other high power application is not recommended.
Power Consumption
Switch consumes no power to operate, so it has no
current leakage or voltage drop
Sensor to Vessel Connection
J2 NPT threaded or JNPS 2 CL150 through 1500
slipon flange connection(1)
Controller Connection
Electrical 1/2-14 NPT external conduit connection
with 18 inches of 18 AWG lead wires, located at the
bottom of the case
Displacer Sizes
J48 X 305 mm, 541 cm3(17/8 X 12 inches, 33 in3)
J76 X 152 mm, 688 cm3(3 X 6 inches, 42 in3)
Maximum Displacer Insertion Length(2), Horizontal
or Vertical
1-7/8 x 12 Displacer with one 6-inch extension
(optional use)
3 x 6 Displacer with one 3-inch extension
(optional use)
Displacer Material and Maximum Sensor Working
Pressure(3)
PVC Displacer: Consistent with CL1500 pressure
temperature ratings per ASME B16.34 up to
maximum pressure of 258.5 bar (3750 psig).
For PED (97/23/EC) maximum pressure limited to
200 bar (2900 psig).
S31603 SST Displacer: CL600 pressure temperature
ratings per ASME B16.34 up to maximum pressure of
99.3 bar (1440 psig)
Note: For slipon flange connection, maximum sensor
working pressure must be consistent with the flange
ratings
Operative Ambient Temperature Limits(3)
Controller: 40 to 75°C (40 to 167°F)
Operative Process Temperature Limits(3)
Sensor:
JPVC Displacer: -18 to 71°C (0 to 160°F)
JS31603 SST Displacer: 40 to 204°C (40 to 400°F)
Construction Materials
Controller
Case and Cover: Marine grade aluminum
Switch: Stainless steel
Span Levers: Stainless steel
Springs: Stainless steel
Sensor
Sensor Body: LCC
ORings: Fluorocarbon
Pivot Assembly: Stainless steel
Displacer: JPolyvinylchloride (PVC) or JS31603 SST
Sensor Spring: Stainless steel
-continued-
Instruction Manual
D103531X012
L2e Controller
March 2017
4
Table 1. Specifications (continued)
Hazardous Area Classifications Available
Switch Only
cCSAus
Explosion-proof Class I Division 1, Groups ABCD
Dust Ignition-proof Class II Division 1, Groups EFG
Dual Seal
ATEX II 2 GD
Flameproof Ex d IIC T6 (Ta=40°C to + 75°C)
Dust Ex tb IIIC T85°C Db IP6X (Ta = 40° to +75°C)
1 A Max
IECEx
Flameproof Ex d IIC T6 (Ta=40°C to + 75°C)
Dust Ex tb IIIC T85°C Db IP6X (Ta = 40° to +75°C)
1 A Max
Canadian Registration (CRN)
The L2e utilizes the same sensor unit pressure
component as the L2 pneumatic controller version.
Refer to the L2 CRN which is deemed applicable to
the L2e.
Declaration of SEP
Fisher Controls International LLC declares this
product to be in compliance with Article 4 paragraph
3 of the PED Directive 2014/68/EU. It was designed
and manufactured in accordance with Sound
Engineering Practice (SEP) and cannot bear the CE
marking related to PED compliance.
However, the product may bear the CE marking to
indicate compliance with other applicable European
Community Directives.
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 Process Instrument Terminology.
1. Converting from a threaded NPT connection to a flange connection is to be done by the end-user. Refer to Converting a Threaded NPT Connection to a Flange Connection instruction Manual
Supplement (D103277X012), available at www.Fisher.com or from your Emerson Automation Solutions sales office.
2. Maximum span setting with 1 7/8 x 12 inch horizontal displacer plus 6 inch extension is not recommended due to potentially insufficient zero adjustment.
3. The pressure and temperature limits in this document and any applicable code limitations should not be exceeded.
Installation
WARNING
Always wear protective clothing, gloves, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage caused by the sudden release of process fluid, be certain the service
conditions do not exceed the sensor pressure limits. Use pressurelimiting or pressurerelieving devices to prevent service
conditions from exceeding these limits.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing this into an existing application, also refer to the WARNING at the beginning of the Maintenance section of this
instruction manual.
CAUTION
If the L2e electric level controller is installed on a vessel that is to be shipped to a different location (e.g. skid mounted
units), remove the displacer and displacer rod extensions before shipment. Failure to do so could result in damage to the
instrument and or the displacer rod due to vibration and impact loading during shipment. After the vessel is installed at its
final location, reassemble the displacer and displacer rod extension.
Note
Use with easyDrive electric actuator after first being used in other high power application is not recommended.
Instruction Manual
D103531X012
L2e Controller
March 2017
5
1. Be sure there are no obstructions inside the vessel that will interfere with displacer installation or operation.
2. Provide the appropriate connection in the vessel wall to match the sensor connection. Locate the vessel wall
connection such that the displacer will be at the desired control level.
Attaching a Vertical Displacer
Refer to figure 9 for part locations.
1. Thread jam nut (key 63) all the way onto the threaded portion of the universal joint assembly (key 69).
2. Thread the displacer (key 81) all the way onto the threaded portion of the universal joint assembly.
3. Tighten the jam nut against the displacer.
Attaching a Horizontal Displacer
Refer to figure 9 for part locations.
1. Thread the displacer (key 81) all the way onto the displacer rod (key 64) or extension (key 82) and tighten.
Attaching the Sensor to the Vessel
Insert the displacer end of the L2e sensor into the vessel connection and tighten enough to seal the threads. If
necessary, loosen or tighten slightly to obtain the horizontal orientation shown in figure 2. Make sure that the
controller case is level.
CAUTION
The displacer rod (key 64) is not a handle. Grasp sensor body or controller housing to lift and carry to avoid internal
component damage.
Figure 2. Sensor Orientation
CORRECT CONTROLLER MOUNTING
HOLE ORIENTATION WHEN MOUNTED ON VESSEL
A6639
Instruction Manual
D103531X012
L2e Controller
March 2017
6
Electrical Connections
WARNING
For explosionproof applications, disconnect power before installing, servicing or removing electrical components.
Personal injury or property damage from fire or explosion may result if power is not disconnected.
Select junction boxes, wiring and/or cable glands that are rated for the environment of use (such as hazardous location,
ingress protection, and temperature). Failure to use properly rated electrical hardware wiring and/or cable glands can
result in personal injury or property damage from fire or explosion. Wiring connections must be in accordance with local,
regional, and national codes for any given hazardous area approval. Failure to follow the local, regional, and national codes
could result in personal injury or property damage from fire or explosion.
An electrical 1/2-14 NPT conduit connection with 18 inches of 18 AWG lead wires is located at the bottom of the case.
The conduit connection is integral to the body of the switch.
The action of the controller is such that rising level will cause the Normally Closed (N/C) contacts to close and the
Normally Open (N/O) contacts to open. Falling level causes the opposite action.
Connect L2e electrical wires as shown in table 2. To reverse the action refer to table 2 and reverse wiring for normally
open and normally closed.
Table 2. L2e Electrical Wire Configuration
Wire Color SPDT Action
Red Normally Closed
Brown Common
Blue Normally Open
Green Ground
Instruction Manual
D103531X012
L2e Controller
March 2017
7
Wiring Configurations
There are two recommended wiring configurations depending on the preferred site solution and approach to electric
level control; a direct connection to the easy-Drive actuator, shown in figure 3 or a direct connection to the easy-Drive
actuator and a remote monitor (figure 4 and 5). In these examples, the L2e is wired using a common and separate N/O
or N/C contact. When implemented as suggested, these wiring configurations provide definitive level switch points
and help reduce issues associated with single pole single throw contact switches, such as “bouncing” due to vibration
or sloshing liquids in a vessel.
Note
Use with easyDrive electric actuator after first being used in other high power application is not recommended.
CLOSE
OPEN
Figure 3. Local Level Control with Direct Connection to easy-Drive Actuator without Remote Monitor
BROWN
RED
BLUE
12/24 VDC
POWER SUPPLY
easy-Drive ACTUATOR
POWER AND CONTROL TERMINAL
X0661
1
GREEN (GND)
1 CONNECT GREEN WIRE TO ACTUATOR GROUND (NOT SHOWN)
2 OPEN CONTACT (2) MAY BE LABELED N.O. AND CLOSE CONTACT (3) MAY BE LABLED N.C.
2
W9795-4
REMOVE COVER TO
ACCESS POWER AND
CONTROL TERMINAL
easy-Drive ACTUATOR WITH
FISHER D3 CONTROL VALVE
Instruction Manual
D103531X012
L2e Controller
March 2017
8
BROWN
RED
BLUE
RED
BLUE
BROWN
DISCRETE INPUT CONFIGURED FOR DRY CONTACT CLOSURE EXTERNALLY POWERED
12/24 VDC
POWER SUPPLY
easy-Drive ACTUATOR
POWER AND CONTROL TERMINAL
ROC809 DI MODULE
X0661
CLOSE
OPEN
1 CONNECT GREEN WIRE TO ACTUATOR GROUND (NOT SHOWN)
2 OPEN CONTACT (2) MAY BE LABELED N.O. AND CLOSE CONTACT (3) MAY BE LABLED N.C.
1
2
GREEN (GND)
REMOVE COVER TO
ACCESS POWER AND
CONTROL TERMINAL
W9795-4
easy-Drive ACTUATOR WITH
FISHER D3 CONTROL VALVE
Figure 4. Local Level Loop Control with Direct Connect to easy-Drive Actuator
with ROC809 Remote Monitor
Instruction Manual
D103531X012
L2e Controller
March 2017
9
W9795-4
Figure 5. Local Level Loop Control with Direct Connect to easy-Drive Actuator
with FloBoss 107 Remote Monitor
BROWN
RED
BLUE
RED
BLUE
BROWN
DISCRETE INPUT CONFIGURED FOR DRY CONTACT CLOSURE EXTERNALLY POWERED
12/24 VDC
POWER SUPPLY
FloBoss 107 AI/DI MODULE OR
FloBoss 107 DIs ON CPU
MODULE'S OPTIONAL I/O ASSEMBLY
X0661
CLOSE
OPEN
1 CONNECT GREEN WIRE TO ACTUATOR GROUND (NOT SHOWN)
2 OPEN CONTACT (2) MAY BE LABELED N.O. AND CLOSE CONTACT (3) MAY BE LABLED N.C.
1
GREEN (GND)
2
REMOVE COVER TO
ACCESS POWER AND
CONTROL TERMINAL
easy-Drive ACTUATOR
POWER AND CONTROL TERMINAL
easy-Drive ACTUATOR WITH
FISHER D3 CONTROL VALVE
Instruction Manual
D103531X012
L2e Controller
March 2017
10
L2e Initial Setup (Dry Displacer)
Refer to figure 6.
1. Move Span to minimum setting.
2. Move Zero down until the valve opens, or N/C contact (red to brown leads) closes.
3. Slowly move Zero up until valve closes, or N/C contact (red to brown leads) opens.
L2e Zero and Span Adjustment (Wet Displacer)
After initial setup (dry displacer) is complete,
1. Enable process flow into the vessel.
2. Move Zero and Span Adjustment for desired liquid zero position and level DG.
3. Tighten the Zero Adjustment hex nut (key 5), shown in figure 7, to lock the Zero setting.
Note
Scan the QR code shown in figure 6 or on the inside cover of the L2e for electric level loop field support.
Figure 6. Initial Setup
GG11109
Indice
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