Cervis SmaRT BU-x18XF Series User manual

2019 Cervis, Inc.
SmaRT BU-x18XF and BU-xH18XF
Base Units
User Manual
U069.3.3
™
™

SmaRT BU-x18XF and BU-xH18XF
Cervis, Inc.
Visit our Web site at: www.cervisinc.com
2019 Cervis, Inc. All rights reserved. Content is subject to change without notice.
This document is the property of Cervis, Inc. and cannot be copied, modified, e-mailed, or reproduced without the express
prior written consent of Cervis, Inc.
Cervis, Inc. reserves the right to change this manual or edit, delete, or modify any information without prior notification.
FCC Statements
15.19 –Two Part Warning
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference and
(2) This device must accept any interference received, including interference that may cause undesired operation.
15.21 –Unauthorized Modification
NOTICE: The manufacturer is not responsible for any unauthorized modifications to this equipment made by the user. Such modifications could
void the user’s authority to operate the equipment.
15.105(b) –Note:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and base unit.
Connect the equipment into an outlet on a circuit different from that to which the base unit is connected.
Industry Canada Statement
This device complies with Canadian RSS-210.
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits
for the general population; consult Safety Code 6, obtainable from Health Canada’s website https://www.canada.ca/en/health-
canada/services/environmental-workplace-health/reports-publications/radiation/safety-code-6-health-canada-radiofrequency-exposure-guidelines-
environmental-workplace-health-health-canada.html.
Le présent appareil est conforme à la norme CNR-210 d'Industrie Canada.
L'installateur de cet équipement radio doit s'assurer que l'antenne est située ou orientée de façon à ne pas émettre un champ RF dépassant les limites de
Santé Canada pour la population générale; consulter le Code de sécurité 6, disponible sur le site Web de Santé Canada https://www.canada.ca/en/health-
canada/services/environmental-workplace-health/reports-publications/radiation/safety-code-6-health-canada-radiofrequency-exposure-guidelines-
environmental-workplace-health-health-canada.html.
Industry Canada Statement
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. Le fonctionnement est soumis aux deux
conditions suivantes : (1) cet appareil ne doit pas causer d'interférences, et (2) cet appareil doit accepter toute interférence, y compris les interférences
susceptibles de causer un fonctionnement non désiré de l'appareil.
IC Unlicensed Devices EIRP Statements for Removable Antennas
Part 1: Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain
approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Partie 1 : Conformément à la réglementation d’Industrie Canada, cet émetteur radio ne peut fonctionner qu'avec une antenne dont le type et le gain maximal
(ou inférieur) sont approuvés pour l'émetteur par Industrie Canada. Pour réduire les interférences radioélectriques potentielles avec d'autres utilisateurs, le
type d'antenne et son gain doivent être choisis de telle sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne soit pas supérieure à celle
nécessaire pour une communication réussie.
Part 2: This radio transmitter (LOBSRF-305) has been approved by Industry Canada to operate with the antenna type listed below with the
maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a
gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.
Partie 2 : Cet émetteur radio (LOBSRF-305) a été approuvé par Industrie Canada pour fonctionner avec le type d'antenne indiqué ci-dessous avec le gain
maximal admissible et l'impédance d'antenne requise pour chaque type d'antenne indiqué. Il est strictement interdit d'utiliser avec cet appareil un type
d'antenne ne figurant pas dans cette liste ou ayant un gain supérieur au gain maximum indiqué pour ce type.
RoHS Compliance Statement
Cervis, Inc. complies with the requirements of Restriction of Hazardous Substances (RoHS/WEEE) Specification based on in-house practice and
declaration of compliance from our vendors. For additional information concerning RoHS compliance, please contact Cervis, Inc. at:
CERVIS, Inc.
170 Thorn Hill Road Warrendale, PA 15086
Phone: [phone] Fax: [phone]
This product may contain material that may be hazardous to human health and the environment. In
compliance with EU Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE):
Do not dispose of the product as unsorted municipal waste.
This product should be recycled in accordance with local regulations. Contact local
authorities for detailed information.

This product may be returnable to the distributor for recycling. Contact your distributor
for details.

Base Unit Manual
2019 Cervis, Inc.
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Table of Contents
Table of Contents........................................................................................................................ iii
List of Figures ............................................................................................................................. iii
List of Table................................................................................................................................. iii
Note to the Manual User............................................................................................................. iv
Related Documents..................................................................................................................... iv
Cautions and Notes .................................................................................................................... iv
1.0 Safety Instructions............................................................................................................... 1
1.1 What You MUST Do .......................................................................................................... 1
1.2 What You MUST NOT Do.................................................................................................. 1
2.0 BU-x18XF Base Unit............................................................................................................. 3
3.0 SmaRT BU-x18XF Options.................................................................................................. 4
3.1 BU-x18XF/BU-xH18XF Base Unit Installation ................................................................ 5
3.2 BU-x18XF Base Unit Wiring Diagram and Connectors Pinout..................................... 6
4.0 SmaRT BU-x18XF in SmaRT Remote Control Systems................................................... 7
5.0 Associate Mode.................................................................................................................... 8
6.0 BU-x18XF and BU-xH18XF Specifications ........................................................................ 9
7.0 LED Diagnostic Troubleshooting..................................................................................... 10
Appendix A: Exposure to Radio Frequency Energy .............................................................. 11
Appendix B: Agency Identification Label Locations.............................................................. 11
Appendix C: BU-218XF Declaration of Conformity ................................................................ 12
List of Figures
Figure 1. SmaRT BU-x18XF/BU-xH18XF Base Unit ....................................................................3
Figure 2. BU-xH18XF Base Unit Mounting Dimensions.............................................................5
Figure 3. BU-x18XF/BU-xH18XF Field Wiring..............................................................................6
Figure 4. SmaRT BU-x18XF/BU-xH18XF with SmaRT Remote Control Unit Examples ..........7
Figure 5. Remote control unit to BU-x18XF/BU-xH18XF Associate Example..........................8
Figure 6. Agency Identification Label Locations ......................................................................11
List of Table
Table 1. SmaRT BU-x18XF and BU-xH18XF Options .................................................................4
Table 2. BU-x18XF/BU-xH18XF P1 and P2 Connectors Pinout .................................................6
Table 3. SmaRT BU-x18XF and BU-xH18XF Specifications.......................................................9
Table 4. SmaRT BU-x18XF LED Troubleshooting Hints ..........................................................10

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
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Note to the Manual User
 Note: The standard SmaRT base unit is available to operate at 900MHz or 2.4GHz using Direct
Sequence Spread Spectrum (DSSS) wireless technology. To avoid repetition and possible
confusion, the base unit may be referred to as the “BU-x18XF”or “BU-xH18XF”throughout this
document, where “x”represents either 900MHz as “9”—for BU-918XF or BU-9H18XF—or 2.4GHz
as “2”—for BU-218XF or BU-2H18XF.
Related Documents
System-related Cervis, Inc. Engineered System Approval document
Appropriate SmaRT remote control unit user manual
Contact us with questions during installation or troubleshooting at [phone].
Cautions and Notes
Cautions warn the user that certain circumstances or conditions warrant that the user be aware
of a presence of danger that may result in harm—or even death—to personnel or destruction of
equipment. Please see the following example:
Caution!
Prevent inadvertent movement of the machine while establishing
the communication link between SmaRT base units and remote
controls. Always disconnect power from the base unit before
attempting to enter Associate mode.
Notes—such as the following example—provide information that may be useful to the user or
are pertinent to system operation.
 Note: Cervis-provided harness wires are either color-coded or individually numbered to aid in
properly wiring the controlled devices to the P1 and P2 base unit connectors.

Base unit Manual
2019 Cervis, Inc.
1
1.0 Safety Instructions
Caution!

Carefully read these instructions to install and use the system properly, to
keep it in safe working condition, and to reduce the risks of misuse.
Do not use this system in potentially explosive atmospheres.
Any use other than that specified in this manual is DANGEROUS.
Strict adherence to the following instructions is a MUST.
 Note: To comply with United States Federal Communications Commission (FCC) radio
frequency (RF) exposure compliance requirements, this device and its antenna must not be
co-located or operating in conjunction with any other antenna or transmitter.
Caution!
Certain adjustments may need to be made while the controlled
machinery is active. All personnel must be at a safe distance from the
machine during these adjustments to avoid risk of injury or accidental
death.
1.1 What You MUST Do
Strictly adhere to the installation instructions contained in this manual.
Make sure that professional and competent personnel carry out the installation.
Make sure that all site and prevailing safety regulations are fully followed.
Make sure that this manual is permanently available to the operator and maintenance
personnel.
Keep the remote control unit out of reach of unauthorized personnel.
At the beginning of each work day, make sure that the Stop Button and other safety
measures are working.
When in doubt, press the Stop Button.
Whenever several systems have been installed, make sure the remote control unit you are
about to use is the right one. Identify the machine controlled by the remote control unit on
the remote unit label (customer-supplied).
An audible or visual warning device indicating that the machine is electrically active and
that the remote control unit has control should be installed on the machine.
Service the equipment periodically.
When carrying out repairs, only use parts supplied by Cervis, Inc. dealers.
1.2 What You MUST NOT Do
Never make changes to the system that have not been studied and approved by Cervis,
Inc.
Never power the equipment with anything other than with the specified power supply.
Never allow unqualified personnel to operate the equipment.
Never leave the equipment ON after use. Always use the Stop Button to avoid accidental
movements.
Never use the system when visibility is limited.
Never abuse the remote unit. Avoid dropping.

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
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Never use the system if failure is detected.

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2.0 BU-x18XF Base Unit
Figure 1. SmaRT BU-x18XF/BU-xH18XF Base Unit
The versatile BU-x18XF and BU-xH18XF base units—where x=2 for 2.4GHz, or 9 for 900MHz
operation—feature 18 FET (field effect transistor) high-side switching outputs or switch-to-
ground digital inputs, factory configurable dual 0–10VDC or 0–20mA analog inputs that can also
be configured as digital outputs/inputs, and Control Area Network (CAN) Bus control capability.
Eight pairs of base unit FET channels can be equipped with high-side current sense for better
valve coil pair control. Table 1 on page 4 lists available configurations and options.
The BU-x18XF and BU-xH18XF accept a broad range of input power, with operating voltages
ranging from 7VDC to 28VDC. The rugged, weatherproof translucent enclosure allows these
units to operate worry-free in harsh weather conditions. Color-keyed or wire-numbered
weatherproof cable harnesses connect the controlled devices. These base units create a robust
communications link with up to eight SmaRT remote control units in congested radio
environments using Direct Sequence Spread Spectrum (DSSS) wireless technology. Base units
and remote control units feature seamless association without the need to open the enclosures.
There is a variety of available SmaRT remote control units to choose from, multiple examples of
which are shown in Figure 4.
Features
18 solid-state FET outputs/inputs
Two 0–10V or 4–20mA inputs, or digital input/outputs (factory configurable)
900MHz or 2.4GHz Direct Sequence Spread Spectrum technology
Dual uniquely keyed connectors for ease of wiring
Diagnostic LEDs
+7 to +28VDC power
Compact design
Rugged, weatherproof construction
Communicates with up to eight SmaRT remotes
Optional RS-232 models for SmaRT Connect use (see Table 1, Figure 3, or Table 2)

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
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3.0 SmaRT BU-x18XF Options
Table 1. SmaRT BU-x18XF and BU-xH18XF Options
Common 18 Channel Features: FETs; 7–28VDC Input Power
Model
Freq.
RF
Antenna
Analog Chan.
Serial
Port
Display
SmaRT
Connect
BU-218XF-EXT
2.4GHz
2mW
External
NA
CAN
No
No
BU-218XF-INT
2.4GHz
2mW
Internal
NA
CAN
No
No
BU-218XF-EXT-DIS
2.4GHz
2mW
External
NA
CAN
Yes
No
BU-218XF-INT-DIS
2.4GHz
2mW
Internal
NA
CAN
Yes
No
BU-218XF-EXT-DIS-AI2
2.4GHz
2mW
External
(2) 4–20mA IN
CAN
Yes
No
BU-218XF-INT-DIS-AI2
2.4GHz
2mW
Internal
(2) 4–20mA IN
CAN
Yes
No
BU-218XF-EXT-AI2
2.4GHz
2mW
External
(2) 4–20mA IN
CAN
No
No
BU-218XF-INT-AI2
2.4GHz
2mW
Internal
(2) 4–20mA IN
CAN
No
No
BU-218XF-EXT-DIS-AV2
2.4GHz
2mW
External
(2) 0–10V IN
CAN
Yes
No
BU-218XF-INT-DIS-AV2
2.4GHz
2mW
Internal
(2) 0–10V IN
CAN
Yes
No
BU-218XF-EXT-AV2
2.4GHz
2mW
External
(2) 0–10V IN
CAN
No
No
BU-218XF-INT-AV2
2.4GHz
2mW
Internal
(2) 0–10V IN
CAN
No
No
BU-2H18XF-EXT-CAN
2.4GHz
100mW
External
NA
CAN
No
No
BU-2H18XF-INT-CAN
2.4GHz
100mW
Internal
NA
CAN
No
No
BU-2H18XF-EXT-DIS-CAN
2.4GHz
100mW
External
NA
CAN
Yes
No
BU-2H18XF-INT-DIS-CAN
2.4GHz
100mW
Internal
NA
CAN
Yes
No
BU-2H18XF-EXT-DIS-AI2-CAN
2.4GHz
100mW
External
(2) 4–20mA IN
CAN
Yes
No
BU-2H18XF-INT-DIS-AI2-CAN
2.4GHz
100mW
Internal
(2) 4–20mA IN
CAN
Yes
No
BU-2H18XF-EXT-AI2-CAN
2.4GHz
100mW
External
(2) 4–20mA IN
CAN
No
No
BU-2H18XF-INT-AI2-CAN
2.4GHz
100mW
Internal
(2) 4–20mA IN
CAN
No
No
BU-2H18XF-EXT-DIS-AV2-CAN
2.4GHz
100mW
External
(2) 0–10V IN
CAN
Yes
No
BU-2H18XF-INT-DIS-AV2-CAN
2.4GHz
100mW
Internal
(2) 0–10V IN
CAN
Yes
No
BU-2H18XF-EXT-AV2-CAN
2.4GHz
100mW
External
(2) 0–10V IN
CAN
No
No
BU-2H18XF-INT-AV2-CAN
2.4GHz
100mW
Internal
(2) 0–10V IN
CAN
No
No
BU-2H18XF-EXT-SC*
2.4GHz
100mW
External
NA
RS-232
No
Yes
BU-2H18XF-INT-SC*
2.4GHz
100mW
Internal
NA
RS-232
No
Yes
BU-9H18XF-EXT
900MHz
10mW
External
NA
CAN
No
No
BU-9H18XF-INT
900MHz
10mW
Internal
NA
CAN
No
No
BU-9H18XF-EXT-DIS
900MHz
10mW
External
NA
CAN
Yes
No
BU-9H18XF-INT-DIS
900MHz
10mW
Internal
NA
CAN
Yes
No
BU-9H18XF-EXT-DIS-AI2
900MHz
10mW
External
(2) 4–20mA IN
CAN
Yes
No
BU-9H18XF-INT-DIS-AI2
900MHz
10mW
Internal
(2) 4–20mA IN
CAN
Yes
No
BU-9H18XF-EXT-AI2
900MHz
10mW
External
(2) 4–20mA IN
CAN
No
No
BU-9H18XF-INT-AI2
900MHz
10mW
Internal
(2) 4–20mA IN
CAN
No
No
BU-9H18XF-EXT-DIS-AV2
900MHz
10mW
External
(2) 0–10V IN
CAN
Yes
No
BU-9H18XF-INT-DIS-AV2
900MHz
10mW
Internal
(2) 0–10V IN
CAN
Yes
No
BU-9H18XF-EXT-AV2
900MHz
10mW
External
(2) 0–10V IN
CAN
No
No
BU-9H18XF-INT-AV2
900MHz
10mW
Internal
(2) 0–10V IN
CAN
No
No
BU-9H18XF-EXT-SC*
900MHz
10mW
External
NA
RS-232
No
Yes
BU-9H18XF-INT-SC*
900MHz
10mW
Internal
NA
RS-232
No
Yes
*Device does not have CAN interface available. SC connectivity using the RS-232 port allows the user to
directly configure the BU-x18XF and BU-xH18XF using SmaRT Connect.

Base Unit Manual
2019 Cervis, Inc.
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3.1 BU-x18XF/BU-xH18XF Base Unit Installation
Caution!
During installation, disable the machine on which the base unit will
be installed.
When mounting the base unit and connecting the wiring harnesses, use the configuration
diagrams supplied by Cervis, Inc. as a guide. Dimensions for drilling mounting holes are shown
in Figure 2. Wiring diagram and connector pinout is shown in Figure 3.
Figure 2. BU-xH18XF Base Unit Mounting Dimensions
102mm (4") centers
7.4mm
(0.29") dia.
133mm (5.25")
74.9mm (2.95")
118mm (4.7")
36mm (1.4")
BU-x18XF

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
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3.2 BU-x18XF Base Unit Wiring Diagram and Connectors Pinout
Figure 3. BU-x18XF/BU-xH18XF Field Wiring
Table 2. BU-x18XF/BU-xH18XF P1 and P2 Connectors Pinout
P1
Pin
Assigned
P1
Pin
Assigned
P2
Pin
Assigned
P2
Pin
Assigned
P1:1
+VDC
P1:7
M13
P2:1
M5
P2:7
+VDC
P1:2
M17
P1:8
M14
P2:2
M6
P2:8
CANL or RS-232 RX
P1:3
M9
P1:9
M15
P2:3
M7
P2:9
M1
P1:4
M10
P1:10
M16
P2:4
M8
P2:10
M2
P1:5
M11
P1:11
M18
P2:5
CANH or RS-232 TX
P2:11
M3
P1:6
M12
P1:12
VDC
P2:6
Umbilical PWR
P2:12
M4

Base Unit Manual
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4.0 SmaRT BU-x18XF in SmaRT Remote Control Systems
The basic standard SmaRT Remote Control System consists of at least one SmaRT base unit, a
SmaRT remote control unit, and the wiring harness used to connect the base unit to the
controlled apparatus. A single base unit can communicate with multiple SmaRT remote control
units—up to eight—a variety of which are available, including the PTO-xH06, the PG-xH14
pistol-grip, the OO-218, the MCB-xH4JS handheld remotes, and the SmaRT Console Remote
examples shown in Figure 4.
Communications between the base unit and the remote control units are established at the
factory using the Associate process, which can also be easily performed on site when necessary
using the SmaRT remote control unit. Associate processes for each remote control unit are
described in detail in each SmaRT remote manual and Cervis, Inc. Engineering SpecSheet.
Figure 4. SmaRT BU-x18XF/BU-xH18XF with SmaRT Remote Control Unit Examples
HH-xH06
Handheld Remote
PG-xH14-DIS
Pistol Grip Remote
BU-x18XF/BU-xH18XF Base unit
HH-218-DIS Remote
PG-xH12JS
Pistol Grip Remote
CB-xH4LV
Remote
HH-xH10
Handheld Remote
MCB-xH4JS
Remote
PG-xH14
Pistol Grip Remote

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
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5.0 Associate Mode
Communication between the SmaRT BU-x18XF and SmaRT remote control units is established
while the system is at the factory before it is shipped. The process can also be applied in the
field when necessary—when a remote is replaced or added, for example. Access to and the
exact button or switch sequencing used while in Associate mode varies depending on the type of
SmaRT remote control unit the base unit is to communicate with. Please reference the
appropriate SmaRT remote control manual or Cervis, Inc. Engineering Spec Sheet for complete
Associate Mode details.
Caution!
Prevent inadvertent machine movement while establishing the
communication link between SmaRT base units and remote
control units. Always disconnect power from the base unit before
attempting to enter Associate.
Associate Example
The following example shows the steps taken to associate a standard SmaRT PTO-x06 six-
button handheld remote control unit to a SmaRT BU-x18XF base unit.
1. Disconnect power from the base unit, and turn OFF the handheld remote control
unit.
2. Stand near the base unit in unobstructed, clear line-of-sight with the remote
control unit in hand.
3. Simultaneously press and hold the Associate (B1) and Dissociate (B2) buttons.
The RX and ER LEDs light.
4. Continue to hold both buttons until the TX and RX LEDs light steady.
5. When the TX and RX LEDs light, release B1 and B2. The ER and BA LEDs light.
 Note: If the next button press is not immediately performed (approximately 2 sec.), all
LEDs flash, and the Associate procedure is aborted. Restart the process to establish the
communication link.
6. Immediately press and hold the Associate button (B1). All LEDs light.
7. The TX LED begins to slowly blink. Continue to hold B1.
8. Apply power to the base unit.
The remote control unit and base unit begin to establish a communication link while the
Associate button is held. Once the process is complete, all LEDs light briefly and then go
out.
9. Release the Associate button.
The TX and RX LEDs flash, indicating that the remote control unit is sending and
receiving messages. The SmaRT System is ready for use.
Figure 5. Remote Control Unit to BU-x18XF/BU-xH18XF Associate Example
Associate (B1)
Dissociate (B2)

Base Unit Manual
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6.0 BU-x18XF and BU-xH18XF Specifications
Table 3. SmaRT BU-x18XF and BU-xH18XF Specifications
Item
Description
Power
Vin
+7 to +28VDC
Radio
Frequencies
BU-218XF: 2405 –2480MHz @ 2mW
BU-2H18XF: 2405 –2480MHz @ 100mW
BU-9H18XF: 906 –924MHz @ 10mW
License
License-Free
Modulation
DSSS
Antenna
Internal or External (RP-TNC)
Environment
Operating Temp
-20°C to 55°C (-4°F to 131°F)
Storage Temp
-40°C to 85°C (-40°F to 185°F)
Humidity
0 to 100%
Vibration/Shock
IEC60068-2-6
10Hz to 150Hz @ 1.0gpeak acceleration
10.0gpeak shock acceleration
LED Indicators
(12 Red)
Unmarked Polarity reversed when lit steady
+V1, +V2, +V3 Voltage –OK when lit steady
1Health (blinks once per second when active)
2RF TX (flashes when active)
3RF RX (flashes when active)
4CAN TX (flashes when active)
5CAN RX (flashes when active)
6Output (blinks once per second when active)
7Input (blinks once per second when active)
8Error (solid when active)
Enclosure
Dimensions
mm: 133 x 118 x 36 (inch: 5.25 x 4.7 x 1.4)
Durability
High Impact Polymer
Mounting Holes
mm: 7.40 dia.; 102 center-to-center
Inch: 0.29 dia.; 4.00 center-to-center
Outputs/Inputs
Eighteen
FET—Open Drain
Current
3A per channel
15A Max. total @ 50°C (122°F)
Digital I/O (18)
Assignments
M1(Ch1) P2–9 M2 (Ch2) P2–10 M3 (Ch3) P2–11
M4 (Ch4) P2–12 M5 (Ch5) P2–1 M6 (Ch6) P2–2
M7 (Ch7) P2–3 M8 (Ch8) P2–4 M9 (Ch9) P1–3
M10 (Ch10) P1–4 M11 (Ch11) P1–5 M12 (Ch12) P1–6
M13 (Ch13) P1–7 M14 (Ch14) P1–8 M15 (Ch15) P1–9
M15 (Ch16) P1–10 M17 (Ch17) P1–2 M18 (Ch18) P1–11
Analog (2)
(factory configurable)
0–10V or
4–20mA
M17(Ch17) P1–2M18 (Ch18) P1–11
Optional Umbilical
Communications
CAN Bus
SAE J1939
SmaRT Connect
See Table 1
Only units marked with –SC are RS-232 capable (CAN is not
available) allowing SmaRT Connect use.

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
10
7.0 LED Diagnostic Troubleshooting
Table 4. SmaRT BU-x18XF LED Troubleshooting Hints
Indication
Cause
Solution†
Unmarked LED
active
Input power polarity is
reversed.
Adjust wiring connections to achieve
correct polarity.
+V1, +V2, +V3
Electrical signals not activating
the LEDs.
Is +VDC input power present?
RTX/RRX (LEDs 2
& 3) not active
Check for obstructions preventing line-of-
sight transmission.
Check that the remote control unit is active.
Re-associate the remote control unit with
the base unit.
CTX/CRX (LEDs 4
& 5) not active
Check CAN wiring.
Check that the remote control unit is active.
Re-associate the remote control unit to the
base unit.
In/Out LEDs (LEDs
6 & 7) not active
Check that the remote control unit LEDs
are active when the appropriate buttons are
pushed.
Check that the startup sequence was
followed.
ERR LED (LED 8)
active
Over-temperature or over-
current channel indication.
Check the outputs for loose wiring, etc.
Active channel current consumption less
than 1A typical. (This is not a problem in
cases where less than 1A draw is a normal
condition.)
Health LED (LED 1)
blinking rapidly
Indicates an internal problem.
Contact Cervis, Inc. service department.
† –If the recommended solutions do not resolve the issue, contact the Cervis, Inc. service department.

Base Unit Manual
2019 Cervis, Inc.
11
Appendix A: Exposure to Radio Frequency Energy
SmaRT handheld remote control units contain radio transceivers. When active, remote control
units send out radio frequency (RF) energy through an internal antenna.
For optimal performance—and to ensure that human exposure to RF energy does not exceed
the recommended guidelines—always follow these instructions and precautions:
When using the handheld remote control unit:
1. Hold the remote control unit so that the top buttons are away from the body in the
direction of the base unit.
2. Keep the remote control unit at least 15mm (⅝inch) away from the body, and
only use carrying cases, belt clips, or holders that are approved by Cervis, Inc.
When active, a SmaRT base unit sends out RF through its external antenna. Base units using
an external antenna should be mounted to ensure that the antenna is at least 20cm away from
the human body. Only use the external antennas recommended by Cervis, Inc.
Appendix B: Agency Identification Label Locations
Figure 6. Agency Identification Label Locations

Note: The base unit agency label position
is identical for all base units, including
both internal antenna and external
antenna, and 900MHz and 2.4GHz base
units.
Agency label will
be here!

SmaRT BU-x18XF and BU-xH18XF
U069.3.3
12
Appendix C: BU-2H18XF Declaration of Conformity

Base Unit Manual
2019 Cervis, Inc.
13
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2019 Cervis, Inc. All rights reserved. Content is subject to change without notice.
Revised manuals are available for download at www.cervicinc.com.