Emerson Control Link Installation And Operation Manual
Control Link ACC Anti-Condensate Controller System
Installation and Operation Manual
026-4704 Rev 6
Emerson
1065 Big Shanty Road NW, Suite 100
Kennesaw, GA 30144 USA
Phone 770-425-2724
Fax 770-425-9319
Contents
1 OVERVIEW ................................................................................................................................................................... 1
2 COMPONENTS ............................................................................................................................................................. 1
2.1. C
ONTROL LINK ACC (P/NS 815-6100 AND 815-6105) ............................................................................................... 1
2.2. D
EWPOINT SENSOR (P/N 814-6115) ........................................................................................................................... 2
2.3. D
OOR FRAME TEMPERATURE SENSOR (P/N 281-0002) .............................................................................................. 2
3 MOUNTING THE CONTROL LINK ACC ............................................................................................................... 3
4 CALCULATING MAXIMUM AMBIENT TEMPERATURE ................................................................................. 4
5 WIRING THE CONTROL LINK ACC ...................................................................................................................... 6
5.1. P
OWER AND HEATER ELEMENT WIRING ..................................................................................................................... 6
5.2. R
ATINGS AND CURRENT PROTECTION.......................................................................................................................... 6
6 MOUNTING AND WIRING THE SENSORS ........................................................................................................... 7
6.1. T
HE DEWPOINT SENSOR ............................................................................................................................................... 7
6.1.1. Placement.............................................................................................................................................................. 7
6.1.2. Note About Using RTV Sealants ........................................................................................................................... 7
6.1.3. Dewpoint Sensor Mounting Dimensions............................................................................................................... 8
6.1.4. Dewpoint Sensor Wiring ....................................................................................................................................... 8
6.1.5. Dewpoint Sensor Storage...................................................................................................................................... 9
6.2. T
HE DOOR FRAME TEMPERATURE SENSOR ............................................................................................................... 10
6.2.1. Placement............................................................................................................................................................ 10
7 NETWORK WIRING AND CONFIGURATION.................................................................................................... 11
7.1. N
ETWORK CONNECTION TO E2 ................................................................................................................................. 11
7.2. E2 S
ETUP OF CONTROL LINK ACC DEVICES ............................................................................................................. 11
7.2.1. Setup Network Ports............................................................................................................................................ 11
7.2.2. Add and Connect Control Link ACCs - E2 Firmware Revision Prior to 2.8...................................................... 12
7.2.3. Add and Connect Control Link ACCs - E2 Firmware Version 2.8 and above ................................................... 13
7.3. W
7.4. MODBUS N
IRING TYPES............................................................................................................................................................ 15
ETWORK AND DAISY-CHAINING ............................................................................................................ 16
7.4.1. Step 1: Disconnect Power to the Control Link ACC and Open the ACC Enclosure .......................................... 16
7.4.2. Step 2: Connect the MODBUS Network Cable................................................................................................... 16
7.4.3. Step 3: Set the Network Address ......................................................................................................................... 16
7.4.4. Step 4: Set the Network Baud Rate and MODBUS Parity ................................................................................. 17
7.4.5. Step 5 - Terminate the End Devices ................................................................................................................... 18
7.4.5.1. Termination Block Network ............................................................................................................................................. 18
7.4.6. Step 6 - Connect a Dewpoint Sensor to Control Link ACC(s) on the Network................................................... 18
7.4.7. Step 7 - Set the Setpoint Temperature Offset ..................................................................................................... 19
7.4.8. Step 8 - Network Configuration Is Complete - Restore Power to the ACC ........................................................ 19
8 THE ACC HAND-HELD TERMINAL INTERFACE............................................................................................. 21
8.1. HHT H
8.2. K
8.3. H
8.4. C
ARDWARE OVERVIEW..................................................................................................................................... 21
EYS AND FUNCTIONS .............................................................................................................................................. 21
AND HELD TERMINAL EXPANSION BOARD ............................................................................................................ 22
ONNECTING THE HHT ADAPTER BOARD ................................................................................................................. 22
8.4.1. HHT Home Screen ............................................................................................................................................. 22
8.5. HHT I
NTERFACE NAVIGATION ................................................................................................................................... 23
Table of Contents • v
8.5.1. ACC HHT Network Setup.................................................................................................................................... 23
8.5.1.1. Modes of ACC Addressing ............................................................................................................................................... 23
8.5.2. The ACC HHT Interface...................................................................................................................................... 23
8.5.2.1. ACC Start Screens ............................................................................................................................................................ 23
8.5.3. ACC Status Screens............................................................................................................................................ 24
8.5.3.1. Input Status Screen .......................................................................................................................................................... 24
8.5.3.2. Output Status Screen......................................................................................................................................................... 24
8.5.4. ACC Configuration Screens................................................................................................................................ 24
8.5.4.1. HHT Changes When ACC is Connected to E2 ................................................................................................................ 24
8.5.4.2. HHT Changes When ACC is Stand-Alone ....................................................................................................................... 24
8.5.4.3. The Main Selection Screen .............................................................................................................................................. 24
8.5.5. Upgrading ACC Using HHT............................................................................................................................... 26
8.5.6. Changing ACC Address Using HHT................................................................................................................... 26
8.5.7. Exit HHT Mode ................................................................................................................................................... 26
9 OPERATION................................................................................................................................................................ 27
9.1. C
ONTROL LINK ACC STATUS LEDS .......................................................................................................................... 27
9.1.1. Heater Status LED .............................................................................................................................................. 27
9.1.2. General Status LED ............................................................................................................................................ 27
9.1.3. TX and RX Status LEDs ...................................................................................................................................... 28
10 ERROR MODES........................................................................................................................................................ 29
10.1. P
10.2. P
10.3. P
10.4. P
10.5. P
RIORITY 1: FAIL: OVER TEMP ............................................................................................................................ 29
RIORITY 2: FAIL: TEMP SENS ............................................................................................................................. 29
RIORITY 3: FAIL: DEWPT SNS ............................................................................................................................ 29
RIORITY 4: FAIL: FLASH/CLK............................................................................................................................. 29
RIORITY 5: FAIL: CONFIGURE............................................................................................................................ 29
11 TROUBLESHOOTING CONTROL LINK ACCS AND THE ECT MODBUS NETWORK ........................... 30
11.1. I
F CONTROL LINK ACC IS OFFLINE ......................................................................................................................... 30
12 SPECIFICATIONS ................................................................................................................................................... 31
13 PART NUMBERS AND DESCRIPTIONS ............................................................................................................. 32
vi • Control Link ACC I&O Manual 026-4704 Rev 6
1Overview
The Control Link ACC Anti-Condensate
Controller System is a controller for anti-sweat
heaters inside glass door cases and can be used either
as a stand-alone device or networked with the E2
controller over the MODBUS network. There are two
available models of the Control Link ACC:
• UL Listed version 7A/10A (P/N 815-6100)
• UL Recognized version 18A/26A/30A
(P/N 815-6105) - requires an additional heat sink
The Control Link ACC varies the anti-sweat
heaters based on the temperature of the door frame
and surrounding dewpoint, providing the most
efficient control possible in order to maximize energy
savings.
2 Components
2.1. Control Link ACC
(P/Ns 815-6100 and
815-6105)
The Control Link ACC (Figure 2-1) handles all
aspects of anti-sweat heater control and uses solidstate switching to control the heaters. The on-board
processor calculates the required heater ON time
based on the dewpoint and door frame temperature
readings, and controls an on-board Triac to activate
and deactivate the heaters.
The controller is designed to mount in the mullion
between glass doors or in any other suitable electrical
enclosure, such as a raceway or on the top of the case.
The door frame temperature sensor and dewpoint
sensor are mounted remotely and connect to this
controller with cable harnesses.
Four LEDs can be viewed on the front of the
plastic enclosure. They indicate the general status,
heater ON, MODBUS network transmit (TX), and
MODBUS network receive (RX).
Figure 2-1 - Control Link ACC - Exploded View
Control Link ACC (P/Ns 815-6100 and 815-6105) Overview • 1
2.2. Dewpoint Sensor
2.3. Door Frame
(P/N 814-6115)
Figure 2-2 - Dewpoint Sensor (814-6115)
The Control Link ACC uses an external dewpoint
sensor (Figure 2-2) to measure the dewpoint of the
outside air next to the case doors. This sensor is
typically mounted directly above or to the side of the
case doors.
The dewpoint sensor is supplied in a mountable
enclosure with a 3-pin connector that attaches the
Control Link ACC to the dewpoint sensor (use a
3-wire 22AWG cable harness - Belden# 8771
P/N 135-8771 not supplied). The push button will
increase the offset in 1-degree (Celsius) (1.8°F)
increments indicated by the LED.
When Control Link ACC controllers are networked together via MODBUS, a single dewpoint
sensor connected to one Control Link ACC may be
shared by multiple Control Link ACC controllers.
Temperature Sensor
(P/N 281-0002)
Figure 2-3 - Door Frame Temp Sensor (281-0002)
In addition to the indoor air dewpoint, the Control
Link ACC also factors in the value of the temperature
of the case door frame using a mounted temperature
sensor (Figure 2-3). The door frame temperature
sensor should be mounted to the coldest surface of the
door frame. The door frame temperature sensor is
supplied with a 16-foot (4.88-meter) two-wire cable,
which plugs into the matching 2-pin connector on the
bottom, low voltage end of the Control Link ACC
(side closest to the LEDs).
2 • Control Link ACC I&O Manual 026-4704 Rev 6
3 Mounting the Control Link ACC
The Control Link ACC is designed to be mounted in a case mullion, but may also be mounted in the raceway
or in a metal electrical enclosure on the top of the case. Figure 3-1 shows examples of where the Control Link
ACC may be mounted.
Figure 3-1 - Control Link ACC Mounting
Use the two mounting tabs at the top and bottom of the enclosure to screw the enclosure to the case wall,
raceway, or enclosure.
Use 9/64” (3.57 mm) drill pilot holes for mounting, and secure the Control Link ACC to the metal surface
using #8-32 thread forming screws. Mounting screws are not included with the Control Link ACC.
For heater current greater than 10A, the Control Link ACC UL Recognized version with external heat sink
must be used (P/N 815-6105). The heat sink of the Control Link ACC must be securely mounted against a
large heat-conductive surface. Using thermal grease, the Control Link ACC has a metal back which acts as a
heat sink, dissipating heat from the Triac that controls the heater.
The metal must be mounted against a conductive metal surface so heat can be conducted out of the
controller. Failure to secure against the case mullion or other metal surface may cause controller overheating
and shutdown.
Door Frame Temperature Sensor (P/N 281-0002) Mounting the Control Link ACC • 3
4 Calculating Maximum Ambient
Temperature
Figure 4-1 shows the effects of adding an external heat sink with a 0.51°C/Watt (0.92°F/Watt) rating (using
thermal grease to ensure optimum thermal conductivity). Note that the 0.51°C/Watt
(0.92°F/Watt) heat sink rating is characteristic of typical case mullions.
An external heat sink is required for heater currents (greater than) > 10Amps.
To calculate the maximum ambient temperature at which the ACC should run with an additional external
heat sink, choose a current-amperage rating that will be operating for the case (y-axis) and plot the maximum
allowed operating temperature (x-axis) on the graph. For example, with an external heat sink at 26Amps, the
maximum ambient temperature would be 40°C (149°F).
Figure 4-1 - Ambient Temperature Calculation - additional heat sink
For heater current greater than 10A, the heat sink of the Control Link ACC must be securely mounted
against a large heat-conductive surface. Using thermal grease, the Control Link ACC has a metal back which
acts as a heat sink, dissipating heat from the Triac that controls the heater. The metal must be mounted against
a conductive metal surface so heat can be conducted out of the controller. Failure to secure against the case
mullion or other metal surface may cause controller overheating and shutdown.
4 • Control Link ACC I&O Manual 026-4704 Rev 6
Figure 4-2 - Ambient Temperature Calculation - no external heat sink
Door Frame Temperature Sensor (P/N 281-0002) Calculating Maximum Ambient Temperature • 5
5 Wiring the
Control Link ACC
WARNING! CONNECT THE LINE
VOLTAGE ONLY TO THE HIGH VOLTAGE
END OF THE ACC, WHICH CONTAINS A
NON-REMOVABLE 4-TERMINAL BLOCK.
OTHERWISE, DAMAGE TO THE BOARD MAY
RESULT.
5.1. Power and Heater
Element Wiring
WARNING! OVER-CURRENT
PROTECTION OF THE LOAD MUST BE
DONE OUTSIDE OF THE CONTROL LINK
ACC. THE ACC DOES NOT
INTERNAL FUSING.
Connect the NEUT terminal to the NEUTRAL
side, and the LINE terminal to the HOT side of 120/
240 Nominal (102VAC to 264VAC), 50/60Hz line
voltage.
The LOAD terminal carries supply voltage when
the door heater Triac relay is ON (closed). Connect
the LOAD terminal and NEUTRAL side of the line
voltage to the case door heater elements. All heater
elements in the door frame and all doors of that frame
should be connected in parallel
ACC.
Connect the GND terminal on the controller to
Ground.
NOTE: For supply connectors, use 16AWG or
larger wires rated for at least 105 °C.
HAVE
to the Control Link
Figure 5-1 - Power/Heater Wiring
The screw connectors on the main voltage end of
the Control Link ACC enclosure are where the
connections to supply voltage and the case door
heater element(s) are made.
6 • Control Link ACC I&O Manual 026-4704 Rev 6
5.2. Ratings and Current
Protection
The Control Link ACC (P/N 815-6100) is UL
Listed for up to 10A max (40°C) and 7A max (65°C).
The Control Link ACC (P/N 815-6105) is UL
Recognized, with external heat sink, for up to 30A
max (25°C), up to 26A max (40°C), and up to 18A
max (65°C).
6 Mounting and Wiring the Sensors
6.1. The Dewpoint Sensor
6.1.1. Placement
Figure 6-1 - Sensor Placement
In order for the Control Link ACC to function
properly, the dewpoint sensor must
it can measure the dewpoint of the air outside
case. Mount the sensor underneath the top side of the
case in the area just above the top of the doors
(Figure 6-1).
A 0.25” x 0.25” (6.35 mm x 6.35 mm) notch in the
edge of the metal frame behind the sensor may be requi re d f or the wi re s conn ec ting the dewpoint sensor to
the Control Link ACC. DO NOT let any RTV sealants
touch the sensor element and keep the sensor element
as far as possible from RTV-sealed areas.
Do NOT mount the dewpoint sensor near the
bottom of the case or any place where cold air from
the case can affect the sensor reading. Avoid
mounting the sensor in an area with excessive water
spray or moisture, extremely dirty environments, near
The Dewpoint Sensor Mounting and Wiring the Sensors • 7
be placed where
the
heat sources, or in the direct path of HVAC returns.
Secure the sensor to the mounting location with the
two included screws (P/N 031-6005) as shown in
Figure 6-2. Emerson recommends using pilot holes
for the screws. Tighten the screws just enough to
secure the sensor without warping the sensor housing.
Loading...