Emerson Dixell XM670K Verdrahtungsschema
Document Part # 026-4280 Rev 1 Page 1 of 33
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
1 Introduction
1.1. General Warnings
Please read the following safety precautions and warnings before using this manual:
2 Before Proceeding
2.1. Software Release of XM670K
1. Look at the software release of XM670K printed on the label of the controller.
2. If the software release is 5.4, proceed with this manual; otherwise contact Emerson to access the correct manual.
3. Note that RTC is not supported on devices connected to E2, E3, and Site Supervisor.
CAUTION!
• This manual is part of the product and should be kept near the device for easy and quick reference.
• The device should not be used for purposes different from those described in this manual. It cannot be used as a safety device.
• Check the application limits before proceeding.
• Emerson reserves the right to change the composition of its products, even without notice, ensuring the same and unchanged functionality.
SAFETY PRECAUTIONS!
• Check that the supply voltage is correct before connecting the device.
• Do not expose to water or moisture: use the controller only within the operating limits and avoid sudden temperature changes with high
atmospheric humidity to prevent condensation from forming.
• Warning: Disconnect all electrical connections before performing any kind of maintenance.
• Fit the probe where it is not accessible by the end user. The device must not be opened.
• In case of failure or faulty operation, send the device back to the distributor or to Emerson (see address) with a detailed
description of the fault.
• Verify the maximum current that can be applied to each relay (see section 16, Technical Data).
• Ensure that the wires for probes, loads, and the power supply are separated and far enough from each other without crossing or intertwining.
• In case of applications in industrial environments, the use of main filters in parallel with inductive loads could be useful.
Figure 2-1 - Software Release of XM670K 5.4
Controllers for Multiplexed Cabinets
XM670K Rel. 5.4
Installing and Operating Instructions
Document Part # 026-4280 Rev 1 Page 2 of 33
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
3 General Description
The XM670K isa high level microprocessor based controllers for multiplexed cabinets suitable for applications on medium or
low temperature. It can be inserted in a LAN of up to 8 different sections which can operate, depending on the programming, as
stand alone controllers or following the commands coming from the other sections. The XM670K has respectively 4 and 6 relay
outputs to control the solenoid valve, defrost - which can be either electrical or hot gas - the evaporator fans, the lights, an
auxiliary output (XM670K) and an alarm output (XM670K). The XM670K also has four probe inputs, one for temperature
control, one to control the defrost end temperature of the evaporator, the third for the display and the fourth can be used for
application with virtual probe or for inlet/outlet air temperature measurement. Finally, the XM670K is equipped with three
digital inputs (free contact) fully configurable by parameters.
The instruments are equipped with the HOTKEY connector that permits to be programmed in a simple way. Direct serial output
RS485 ModBUS-RTU compatible permits a simple XWEB interfacing. The HOTKEY connector can be used to connect X-REP
display (depending on the model).
3.1. Ordering Codes
4 Installation and Mounting
This device can operate without any user interface, but normal application is with CX660 or CH660 keyboard (both 660 displays
are supported).
Part Number Description
318-6521 XM670K Case Controller Solenoid, 110V, V5.4, NTC CPC, with Connectors
318-6750 Remote Display Keyboard CX660 for XMs
318-6751 Remote Display Keyboard CH660 for XMs
Table 3-1 - Product Ordering Codes
CX660 CH660
Figure 4-1 - CX660 Keyboard Installation and Mounting
The CX660 keyboard should be mounted on a vertical panel,
in a 29 x 71 mm hole, and secured using the special bracket
supplied Figure 4-1
The temperature range allowed for correct operation is 32 to
140°F (0 to 60°C). Avoid places subject to strong vibrations,
corrosive gases, excessive dirt or humidity. The same
recommendations apply to probes. Allow air to circulate
through the cooling holes.
Document Part # 026-4280 Rev 1 Page 3 of 33
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
4.1. Dimensions
5 Wiring Diagram and Connections
5.1. Important Note
The XM device is provided with a disconnectable terminal block to connect cables with a cross-section of up to 1.6 mm2 for all
low voltage connections: RS485, LAN, probes, digital inputs, and keyboard. Other inputs, power supply and relay connections
are provided with a screw terminal block or Faston connection (5.0 mm). Heat-resistant cables have to be used. Before
connecting the cables, verify that the power supply complies with the controller’s requirements. Separate the probe cables from
the power supply cables, outputs and power connections. Do not exceed the maximum current allowed on each relay. In case of
heavier loads, use a suitable external relay. N.B Maximum current allowed for all loads is 16A.
The probes should be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended
to place the thermostat probe away from air streams to measure the average room temperature correctly. Place the defrost
termination probe among the evaporator fans in the coldest place (where most ice is formed) and far from heaters or from the
warmest place during defrost to prevent premature defrost termination.
5.2. XM670K- All Power Supply
Models with 115V supply: use terminals 8-7 for supply.
Figure 4-2 - CX660 and CH660 Dimensions
Figure 5-1 - Wiring and Connections
Document Part # 026-4280 Rev 1 Page 4 of 33
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use.
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5.3. Keyboard Display CX660 or CH660
5.4. LAN Connection - Maximum of 8 Connections
To create a LAN connection and to a perform synchronized defrost (also called master-slave functioning):
1. Connect a shielded cable between terminals 38 [-] and 39 [+] for a maximum of eight (8) sections.
2. The Adr parameter is the number that identifies each electronic board. Address duplication is not permitted; in this case,
synchronized defrost and the communication with the monitoring system are not guaranteed (the Adr is also the
MODBUS address). See Figure 5-3 for an example of a properly configured LAN connection:
5.5. How to Connect the Monitoring System
Figure 5-2 - Keyboard Display
Figure 5-3 - LAN Connection
NOTE: If the LAN is connected properly, the green LED will be ON. If the LAN is not connected properly, a blinking LED will display.
The maximum allowed distance is 30m.
Figure 5-4 - Connecting the Monitoring System
The XM670/679K Board can operate also without
keyboard.
Polarity:
Terminal [34] [-]
Terminal [35] [+]
Use twister shielded cable AWG 18 or less in cases where
longer distance is required.
Max distance: 30 meters
1. Connect through terminals 36 [-] and 37 [+].
2. Use a shielded twisted cable (for example, Belden 8762 or CAT 5 cable).
3. The maximum allowable distance is 1 kilometer.
4. Do not connect the shield wire to the earth or ground terminals of the
device. Use insulation tapes to avoid accidental contacts.
Document Part # 026-4280 Rev 1 Page 5 of 33
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Only one controller for each LAN should be connected to the RS485 connection.
The Adr parameter is the number that identifies each electronic board. Address duplication is not permitted; in this case,
synchronized defrost and the communication with the monitoring system are not guaranteed (the Adr is also the MODBUS
address).
5.6. Digital Inputs
The i1P can be set to: cL= active when closed; or oP= active when opened.
The i1F parameter can be set to: EAL = external alarm, Bal = serious lock alarm, PAL= pressure switch alarm, dor = door switch,
dE F= external defrost, AUS= auxiliary activation command, LiG= light activation, OnF = board On/OFF, FHU= do not use this
configuration, ES= day/night, or HdY = do not use this configuration.
The i1d parameter is for the delay of activation.
For the other digital inputs, same set of parameters is present: i2P, i2F, i2d, i3P, i3F, i3d.
5.7. Analog Output
The analog output is located near the terminal [39] on a two-pin connector. The analog output can be used to control anti-sweat
heaters using a chopped phased controller, XRPW500 (500 watt) or family, XV...D or XV...K.
Figure 5-5 - Connecting Monitoring Systems
Figure 5-6 - Digital Inputs
Figure 5-7 - Analog Output
1. Terminals [30] through [33] are all free of voltage.
2. Use a shielded cable for distances higher than one meter.
For each digital input, configure the parameters: i1P (polarity of activation), i1F (function of
the input), and i1d (delay of signaling).
• Can be set between 4 to 20mA and 0 to 10VDC.
• Use a CABCJ15 cable for connections.
Document Part # 026-4280 Rev 1 Page 6 of 33
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Visit our website at www.climate.emerson.com for the latest technical documentation and updates.
6 User Interface
6.1. Icons
6.2. Keyboard Commands
Single commands:
•LIGHT relay: Press the light button
•AUX relay: Press the down arrow button
•Manual defrost: Press the defrost button for three (3) seconds
•ON/OFF: Press the ON/OFF button for three (3) seconds (if the function is enabled)
•Energy Saving: Press the ON/OFF button for three (3) seconds (if the function is enabled)
Figure 6-1 - XM670K Display
Cooling Output
Light Fan The output is activated when the icon is ON. A delay
is present when the icon is blinking.
MEASUREMENT UNIT
°C, Bar, and (time) are ON depending on the
selection.
Defrost Auxiliary relay
Energy Saving Multimaster enabled
Generic alarm Clock/time
DURING PROGRAMMING: The measurement units of temperature and pressure will blink.
Table 6-1- XM670K Display Icons
Document Part # 026-4280 Rev 1 Page 7 of 33
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6.2.1. Double Commands
6.3. How to Modify the Air Temperature Regulation Setpoint
The thermostat setpoint is the value used to regulate air temperature. The regulation output is controlled by the electronic valve
or the relay.
In any case, it is possible to wait for about 10 seconds to exit. In order to show the air temperature set is sufficient to press and
release the SET button, the value is displayed for approximately 60 seconds for KEY COMBINATIONS.
7 How to Program the Parameters
(Pr1 and Pr2)
The device has two programming levels: Pr1 (direct access) and Pr2 (password-protected, access for higher level users).
+ Press for three (3) seconds to lock (Pon) or unlock (PoF) the keyboard.
Press both keys to exit the programming mode or from a menu; when on submenus EEV, pressing these keys
returns you to the previous level.
Press both keys for three (3) seconds to enter the first level of the programming mode.
Table 6-2 - Keyboard Double Commands
BEGIN Press the SET key for three (3) seconds (the measurement units will blink).
Value modification or Use the up arrow and down arrow keys to change the LS and US parameters value.
EXIT Press the SET key to save the value (the value will blink for two (2) seconds).
Table 6-3 - Modifying the Air Temperature Regulation Setpoint
ACCESS to Pr1 Press for three (3) seconds to enter the first programming level (Pr1).
Select item or Press the up arrow or down arrow key to select the parameter or submenu.
Show value Press the SET button.
Modify or Press the up arrow or down arrow key to change the value.
Confirm and
store Press SET (the value will blink for three (3) seconds and then display the next parameter).
EXIT Press to exit the programming mode, or wait for 10 seconds to exit.
Table 7-1 - Programming the Parameters (Pr1 and Pr2)
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7.1. How to Enter Pr2
To enter Pr2 programming menu:
1. Press SET+ down arrow keys for three (3) seconds to enter Pr1 menu (the first label will display).
2. Press down arrow until the Pr2 label displays and then press SET.
3. A blinking “PAS” label displays. Wait a few seconds.
4. When a blinking “0 - -” displays, enter the password [321] by pressing the up arrow and down arrow keys. Press SET to
save.
GENERAL STRUCTURE: The first two items, rtC and EEV, are related to the submenus of the other parameters.
• Pressing the SET + up arrow keys on the rtC or EEV submenu returns you to the parameter list.
• Pressing the SET + up arrow keys on the parameter list exits the screen.
7.2. How to Move a Parameter From Pr1 to Pr2 Level and Vice Versa
Enter the Pr2 level and select the desired parameter then press the SET+ down arrow keys. If the LED on the left-hand side of the
screen is ON, it means that the parameter is present in Pr1 level; if the LED is OFF, it means that the parameter is not present in
Pr1 (Only Pr2).
Figure 7-1 - General Structure
Document Part # 026-4280 Rev 1 Page 9 of 33
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8 Fast Access Menu
The Fast Access menu contains the list of probes and values that are automatically emptied by the board such as the superheat
and percentage of valve opening. The values: nP or noP stand for probe not present or value not emptied, and Err means the
value is out of range, the probe is damaged, not connected, or configured incorrectly.
9 Multimaster Function Menu (SEC)
The function “section” SEC is enabled when the icon is lit. It allows entering the remote programming mode from a keyboard
not physically connected to the board through the LAN functionality.
ENTERING THE FAST ACCESS
MENU
Press and release the up arrow key. The duration of the menu in
case of inactivity is about 3 minutes. Depending on the
configuration of the board, the values display.
To select an entry, press the
or , then press to view
the value or to move to the next
value.
MAP Current map (0 to 3): it shows which map is used
HM Access to clock menu or reset the RTC alarm
An Value of analog output
dP1 (Pb1) Value read by probe 1
dP2 (Pb2) Value read by probe 2
dP3 (Pb3) Value read by probe 3
dp4 (Pb4) Value read by probe 4
rCP Value of P4 remote probe for heaters. It is displayed only with P4C = LAn.
If the value is not available “noP” label is displayed.
dPr Virtual probe for room temperature regulation [rPA and rPb]
rSE Real thermoregulation setpoint: the value includes the sum of SET,
HES and/or the dynamic setpoint if the functions are enabled.
L°t Minimum room temperature
H°t Maximum room temperature
tMd Time to next defrost (minutes)
LSn Number of devices in the LAN
LAn Address list of devices in the LAN
GAL To see all the active alarms in each device connected to the LAN
EXIT Press together or wait the time out for 60 seconds.
Table 8-1 - Fast Access Menu
Figure 9-1 - LAN Connection
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(*) The devices on the LAN are indexed by using the Adr parameter (in ascending order).
EXAMPLES:
1. To modify the same parameter values in all the devices connected to the LAN: enter the multi-master menu. Select and
confirm ALL. Exit from the multi-master menu. Enter the programming menu and change the required parameter values.
The new values will be changed on all devices connected to the LAN.
9.1. Synchronized Defrost
The synchronized defrost allows multiple defrosts to be managed from different boards connected through the LAN connection.
In this way, the boards can perform simultaneous defrosts with the possibility to end them in a synchronized manner.
Action Button or display Notes
Enter menu Press the up arrow key for about three (3) seconds; the icon will be ON.
Waiting for action SEC The menu to change the section will be entered. SEC label will be displayed.
Enter section list Press SET to confirm. The following list will be available to select the proper
network function.
Select proper function or LOC
GLb
To gain access only to the local device.
To share global command to all the devices connected to the LAN.
Confirm Select and confirm an entry by pressing SET button.
Exit menu Press SET and the up arrow together or wait aproximately 10 seconds.
Table 9-1 - Multimaster Function Menu Action Buttons
CAUTION: At the end of programming, select the LOC section to switch OFF the icon.
CAUTION: In this case, the Adr parameter cannot be duplicated because defrost cannot be managed correctly.
BEGIN Press for three (3) seconds, the rtC or other will be showed. The measurement unit
blinks.
Find Adr Press the down arrow key several times to find the Adr parameter, then press SET.
Modify Adr or Set the value of Adr parameter, then press SET to confirm the parameter.
EXIT Press both keys to exit from menu or wait for about 10 seconds.
Table 9-2 - Synchronized Defrost Keys
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