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Preferred Utilities Mfg Corp
Preferred Instruments div.
31-35 South Street, Danbury CT 06810
203-743-6741
www.preferred-mfg.com
Table of Contents:
SAFETY .............................................................................. 2
Operation ............................................................................ 3
Alarms ............................................................................ 3
History ............................................................................ 3
Low Drum Level Alarm and Shutdown Sequence .............. 4
Level Transmiter Failure Alarm ........................................... 4
Level Setpoint Selection ..................................................... 4
PID Mode Selection ............................................................ 4
ON/OFF Control .................................................................. 4
Channel Enable/Disable ..................................................... 5
Steam Flow Feedforward .................................................... 5
AOUT 0-2 Configuration ..................................................... 5
ROUT 0-2 Configuration ..................................................... 5
Blowdown History ............................................................... 5
SDI-JC-43D2 rev 7-19-23
JC-43D2 3-Element Drum Level Controller
Installation & Operation Instructions
The JC-43D2 3-Element Drum Level Controller maintains a boilers drum
level at setpoint by modulating a 4-20 mA control output with a user
selectable 1-element, 2-element, or 3-element PID loop.
The JC-43D2 can be configured for an alternate offline setpoint mode to
account for sink and swell in the boiler drum as the boiler transitions
between online and offline. A user-configured warmup and cooldown
delay keeps the PID from modulating until the boiler is making steam,
and also allows the control valve to continue modulation for a time period
after the boiler is shutdown.
The JC-43D2 can be wired to interface with the burner control to
shutdown the burner in the case of a low drum level or high steam
pressure condition in addition to external level and pressure switches.
Features
3-Element PID Drum Level Control
Low Steam Flow and Low Feedwater Flow Fallback to 1-Element
Control
11-Point User-Configured Steam Flow Feedforward Curve for 2-
Element Control
High And Low Drum Level Alarms
High and Low Steam Pressure Alarms
Steam Pressure Compensation for Drum Level and Steam Flow
Inputs
Level Transmitter Failure Monitoring and Alarm
Periodic Blowdown Reminder
Alternate Offline Setpoint for Sink/Swell Compensation
Warmup and Cooldown Delays before Enabling/Disabling PID
Control
Steam Flow and Feedwater Flow Totalizers
Installation .......................................................................... 6
JC-43D2 Controller Mounting: ....................................... 6
Wiring Requirements ..................................................... 6
Terminal Layout and Wiring Diagrams .......................... 8
Parameters / Menu Map ..................................................... 9
Feedforward Setup ................................................. 11
1-Element Fallback ................................................. 12
Controller Tuning Screens ............................................... 15
Steam Flow Feedforward Curve Screen ..................... 15
Live Tuning Data Screen ............................................. 15
Modbus ............................................................................ 16
Parts List .......................................................................... 17
Specifications ................................................................... 17
Full Size Cutout Template ................................................ 18
page 1 of 18
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Summary of Contents for Preferred JC-43D2
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Page 1: Table Of Contents
4-20 mA control output with a user selectable 1-element, 2-element, or 3-element PID loop. The JC-43D2 can be configured for an alternate offline setpoint mode to account for sink and swell in the boiler drum as the boiler transitions between online and offline. -
Page 2: Safety
Failure to do so can result in equipment damage, injury, or death. Incorrect wiring connections to burner/boiler Flame Safeguard controls can cause Equipment Damage, Injury, or Death SDI-JC-43D2 rev 7-19-23 page 2 of 18... -
Page 3: Operation
The History memory is retained when powered down. The History can be extracted via the USB Hide Silence Home port using the free JC_TG_Edit Windows App. Events Alarms Show Events Menu Screens To set clock, Alarm Setpoints, and other initial Setup…..See pages 12-15 SDI-JC-43D2 rev 7-19-23 page 3 of 18... -
Page 4: Low Drum Level Alarm And Shutdown Sequence
If a differential pressure transmitter is not regularly maintained, the sensing lines can become blocked which could cause the transmitter to read out of range. If the Level Sensor Failure alarm option is enabled, the JC-43D2 will detect when this happens, and a Level Sensor Failure alarm will occur. -
Page 5: Channel Enable/Disable
Pressure Compensation feature for the Drum Level and Steam Flow inputs. Steam Flow Feedforward When the JC-43D2 is set to 3-Element PID mode, the Feedforward Type parameter must be set to “Linear Gain” and the Steam Flow Feedforward Curve is not used. -
Page 6: Installation
Installation JC-43D2 Controller Mounting: 3.88 1.00 The JC-43D2 Controller is designed for flush mounting in an enclosure located rated NEMA 12 or better. 4.88 Touch 8.74 The JC-43D2 should not be subjected to excessive vibration. Panel Cutout Screen 8.00 3.61 x 7.65 Continuous operation is guaranteed over the 32-131 F (0-55C) ambient operating range. - Page 7 IEC 60947-1 and -3 must be provided. Fuse: 3.15 amp Slo-Blo, 250 V, 5x20mm (Littlefuse 02393.15HXP, Belfuse 5TT 3.15-R, Preferred Utilities 16740-3.15S) 2 amp Slo-Blo, 250 V, 5x20mm (Littlefuse 0239002.HXP, Belfuse 5TT 2-R, Preferred Utilities 16740-2S) Caution: To reduce the risk of fire, only replace fuses with the same type.
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Page 8: Terminal Layout And Wiring Diagrams
Terminal Layout and Wiring Diagrams Main Board Board Future Ethernet Rmt I/O 3.15A Slo Blo Slo Blo SDI-JC-43D2 rev 7-19-23 page 8 of 18... -
Page 9: Parameters / Menu Map
Boiler Running Input Totalizer Setup Boiler Cooldown Delay Communication Steam Totalizer Option Boiler Warmup Delay RS-485 Steam Totalizer Zero Blowdown Bypass PB Ethernet FW Totalizer Option Blowdown Reminder FW Totalizer Zero Blowdown Reminder Hours SDI-JC-43D2 rev 7-19-23 page 9 of 18... - Page 10 Disabled Enabled Disabled Offline Setpoint Option Enabling this parameter allows the JC-43D2 to use a secondary drum level setpoint when the burner is not running. When the burner shuts off, the PID will maintain the drum level at this secondary (typically lower) setpoint.
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Page 11: Feedforward Setup
If this option is enabled, the JC-43D2 will detect level sensor failures when the burner is running. Sensor Failure Delay The amount of time that the JC-43D2 does not register a change from the drum level input before the Level Sensor Failure alarm is activated. Control Type Parameter Default Max. -
Page 12: 1-Element Fallback
Go to: Menu > Configure/Setup > Inputs/Outputs > Drum Level Setup -10.0 99.0 -50.0 Level Xmtr @ 20 mA = (“wc) This sets what the JC-43D2 interprets 20 mA to be for the Drum Level signal. -50.0 Level Xmtr @ 4 mA = (“wc) 10.0 99.0 This sets what the JC-43D2 interprets 4 mA to be for the Drum Level signal. - Page 13 -50.0 Stm Flow kpph @ 20 mA = This sets what the JC-43D2 interprets 20 mA to be for the Steam Flow signal. Stm Flow Decimal Digits The number of decimal places that will be displayed for the Steam Flow signal.
- Page 14 Cooldown Delay Seconds If the Burner Running Input option Is enabled and the Offline Setpoint option is disabled, the JC-43D2 will use this parameter to determine when to allow the PID to control the drum level. When the Burner Running input goes from ON to OFF, the controller will wait for this number of seconds before disabling the PID and setting the control output to 0%.
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Page 15: Controller Tuning Screens
Alarms gradually. If the drum level signal is not jumping much at all, the Filter Seconds must be decreased because excessive Filter seconds will cause the controller to overshoot. History SDI-JC-43D2 rev 7-19-23 page 15 of 18... -
Page 16: Modbus
40132 UINT32 Steam Flow Total 40134 UINT32 Feedwater Flow Total 40136 FLOAT Fill Valve ON SP 40138 FLOAT FILL Valve OFF SP RO = Read Only WO = Write Only RW = Read/Write SDI-JC-43D2 rev 7-19-23 page 16 of 18... -
Page 17: Parts List
RS485: Isolated, 4.8 - 57.6k baud, Modbus RTU Analog Inputs Ethernet: 10/100 Mb/s, Modbus/TCP (4) 4-20 mA, 16 bit, 5 samples/sec, 50/60Hz filter: -90db Analog Output (2) 16 bit, 4-20mA, max 650 ohm load Servo/VSD Command SDI-JC-43D2 rev 7-19-23 page 17 of 18... -
Page 18: Full Size Cutout Template
Full Size Cutout Template Mounting Bracket (inside of panel) Edge of Faceplate (outside of panel) 7.65 JC-43D2 Panel Cutout 3.61 Preferred Utilities Mfg Corp Preferred Instruments div. 31-35 South Street, Danbury CT 06810 203-743-6741 www.preferred-mfg.com SDI-JC-43D2 rev 7-19-23 page 18 of 18...
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