Mission MyDro 150 Quick start guide

150/850
Upgrade Manual
PMS 660
Contact tech support if plans
change and when RTU is ready
to be put in production.
This RTU upgrade is set to be
installed at this location:

2
Welcome,
Thank you for choosing Mission Communications for your monitoring and alarm
needs.
This document is intended for installers experienced with the M110 and M800
series (Legacy series) remote terminal unit (RTU) installations and those
upgrading M110 and M800 to MyDro RTUs. This manual highlights some of the
differences between the Legacy series and MyDro series RTUs to aid in your
next installation or upgrade.
At Mission, it is our goal to provide customers with the latest technology and
designs while ensuring great value. A wide range of information is accessible
through the web portal. You may also use your smartphone to scan the QR
codes in this manual, which will take you to the corresponding document on our
website.
We encourage you to take advantage of our quarterly newsletters, training
videos, and weekly webinars. Visit 123mc.com to contact us or learn more about
our training resources. Our technical support staff is available by calling
[phone], option 2.
Thank you,
The Mission Team
WARNING: This symbol indicates there is caution or warning to avoid
damage to your property or product.
WARNING: Follow requirements for eld wiring installation and
grounding as described in NEC and your local/state electrical codes.
NOTE: This symbol indicates that there is something that requires
your special attention.
This device complies with part 15 of the FFC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.

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Contents
Chapter 1: Overview 4
Included for Retrot 5
Plan Your Strategy 5
Chapter 2: Before Disassembly 6
Power In 6
Battery Power 6
Auxiliary Power 6
Digital Inputs 8
Wet Well Module 8
Analog Inputs 10
Output Relays 11
I/O Expansion 12
Chapter 3: Enclosure Installation 13
Rewiring 13
Conguration Adjustments 17
Congurable Settings Shown on the LCD 17
Congurable Settings Not Shown on the LCD 18
Chapter 4: Test the MyDro After Installation 19

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Chapter 1: Overview
This document describes the changes that may be required because of the
differences between Legacy and MyDro series RTUs. We strongly encourage
you to review this entire document and the standard installation manual before
beginning the upgrade, as these notes are a supplement to those instructions.
Technical support is available to assist you.
The MyDro RTU is designed to be an easy upgrade from an M110 or M800
series RTU regardless of enclosure. The upgrade kit should include all the parts
needed to mount the components into the same form factor enclosure as was
specied on the order. Few, if any, new holes will be required to complete the
upgrade. Wire terminals are in the same general area as the previous boards
so most wires will simply need to be reterminated, and the MyDro features
removable terminals for convenience.
The MyDro may require slightly different wiring considerations than the M110
and M800 series RTUs due to enhanced electronics. The most notable are
congurable auxiliary output voltages, isolated analog inputs, and the lack of
direct support of the Wet Well Module (WWM). MyDro directly supports the pump
run load sensors associated with the WWM, but not the module itself.
The Safe Module Plus is an available option that improves upon the
Wet Well module and provides 4 pulse accumulators typical associated
with rain tipping buckets and pulse based ow meters.
Future product enhancements will focus on the MyDro platform, including those
related to communications and Modbus. The over-the-air rmware upgrade
capability makes it easy for us to deliver these enhancements to you as they
become available.

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Included with RTU Upgrades
Common parts for all enclosures:
□Printed circuit board (PCB)
□Screwdriver
□LCD stylus
□Electronic key congured
to allow conguration changes
on the MyDro touchscreen
□New antenna (PN RF430)
□New battery (PN PW441)
□Key reader
□(4) #6–32 screws
□(2) Load sensors
□(6) Tie wraps
FlatPak:
□Metal lid with window
□(4) 1/4’’ standoffs
□Knockout plug
NEMA 1:
□Standoff mount
□(2) Knockout plugs
□Metal lid with window
NEMA 4
□Plastic lid for MyDro
□(4) 1/2’’ standoffs
□(1) Additional key reader
NEMA 4X Solar Enclosure:
□Plastic lid for MyDro
□(8) 1/2’’ standoffs
□(1) Additional key reader
Plan Your Strategy
In many cases, you will simply mount the new printed circuit board (PCB) and
rewire the conductors as they were before. This is a good time to address
aspects of installation that could be done better. Consider the best practices
listed on the following page before installation.

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Before you decommission your existing RTU, exercise each sensor to conrm
they are working properly. This will allow your nal tests of the MyDro to be
conclusive.
To minimize down time, conrm that the MyDro RTU is ready for installation.
Temporarily connect an antenna and power up the uninstalled MyDro RTU with
battery power to ensure the radio is active and the carrier is appropriate for your
location.
Chapter 2: Before Disassembly
Familiarize yourself with what you have by looking at the I/O descriptions and
conguration of your web portal. Conrm those details by evaluating existing
local wiring and then correct or update your local labeling. Review the MyDro
150/850 Installation Manual prior to upgrading an existing RTU.
Use the camera in your smartphone to capture the wiring of your existing RTU.
Individually label non-obvious conductors.
Power In
The top two terminals on the left are generally where power from the 120 volts to
12 VAC transformer enters (in some cases solar power). The new wiring will be
the same unless this is a solar-powered RTU. Power supplied by a solar panel is
polarity sensitive. An independent solar charge regulator is recommended.
Battery Power
The battery terminals are controlled by a smart charging circuit that reduces
current as the battery voltage approaches 13 volts. Even with solar panels, where
20 VDC is not uncommon, the voltage will be regulated to not overcharge the
battery.
Auxiliary Power
The voltage provided by the auxiliary (aux) power terminals is software selectable
as 0, 12, or 24 VDC. The aux terminals of the Legacy RTU supplied 12–16 VDC.
The 24 VDC option is the preferred voltage for most 4–20 mA transducers. Any
components powered by aux must complement your aux voltage setting.

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Wiring Best Practices
Note: Mount the supplied transformer outside the Mission enclosure.
• Signal cables should not run parallel with high voltage AC wires (load conductors).
• Where signal wires and load conductors must cross, do so at right angles.
• High voltage should not enter the Mission RTU.
• Lay wires in wire trays with the excess near terminations. Replace wire race covers
(follow NEC and your local/state electrical codes requirements).
• Cables used for digital and analog inputs should be 18–22 gauge, shielded, twisted pair
wire with the shield connected to ground at the RTU and not on the other end of the cable
(to prevent ground loop current).
• MOVs can be installed across AC contactor coil terminals to shunt voltage spikes away from
the RTU inputs and other electronics in the panel. Voltage spikes can be caused by coils
de-energizing. The included MOVs are rated for 120 volt circuits and will suppress excess
voltage above 150 volts. These parts are application dependent. They have a nite lifespan
and will need to be replaced over time.
Antenna Best Practices
Do Don’t
Mount the antenna outside and high as possible,
preferably above the roof or other objects.
Mount the antenna underground, in a dry well, or
inside a canned lift station.
Mount the antenna above all metal surfaces close
to the installation.
Mount the antenna horizontally or bend the antenna
whip.
Coil excess coax in circles of 5 to 7 inches in diam-
eter. Pinching or tight bends in the coax can restrict
the high frequency/low power radio signal path in
much the same way water ow is restricted through
a tight bend in a hose.
Mount the antenna inside a metal control cabinet.
Even berglass cabinets degrade the signal.
Ensure that the weight of the cable does not
damage the antenna base. There should be enough
slack in the cable so it does not rest or touch the top
surface of the mounting bracket.
Mount the antenna on the side of a metal cabinet
or adjacent to a tank. Metal surfaces will reect
the radio signal, preventing it from traveling in all
directions.
Incorporate a drip loop when installing the cable to
prevent water from penetrating into the building or
enclosure.
Cut, lengthen, or shorten the coaxial cable.
Mission can supply antenna extension cables and
connectors up to 50 feet. For lengths above this
limit, another RTU mounting location should be
considered.

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Digital Inputs
The MyDro digital inputs feature software selectable wire fault supervision.
That means the end-of-line (EOL) resistors are optional. When the no-fault (NF)
setting is chosen at the LCD digital input “Cong.” screen, no EOL resistors
should be installed.
Multiple sensors connected to the MyDro digital input can be wired to
(share) a common (chassis) ground. The Legacy series required 1,800
ohm resistors wired in series as described in Appendix C of the M110/
M800 Installation Manual.
See I/O Expansion section for expanded digital information.
Note: For EOL resistors to be effective they must be installed parallel to
the sensor switch, not on the terminals of the RTU.
Wet Well Module
Legacy series RTUs support the Wet Well Module (WWM) by way of the RJ45
interface on the left side of the printed circuit board. There were two versions of
the WWM (green, older and red, newer). The MyDro does not directly support
either version of the WWM, but does support the optional Safe Module Plus
via the RJ45 (RS485/Modbus port).
The WWM provided two primary functions—that of pump run indication and that
of sharing the signal of the high-level oat to both the Mission RTU and the local
panel (local siren). While the MyDro does not support the WWM the cable from
either version can be cut and terminated directly to the MyDro terminals. If you
currently utilize local alarming and want to continue doing so, you may consult
Figure 1 to reuse the WWM.
Furthermore, the newer, red version relies on the load sensors that are now directly
supported on the MyDro. In other words, you could chose to directly wire the load
sensors to the MyDro as indicated in the standard MyDro installation manual and
continue to use the oat functionality of the WWM.

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Figure 1:
Using Wet Well Module with MyDro
Figure 1b:
Using Safe Module Plus with MyDro

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Figure 2:
Analog Input Wiring
Analog Inputs
The two onboard analog inputs of the MyDro
are isolated—they were not on the
Legacy board. If the power for the instrument
is sourced from the MyDro aux terminals an
additional conductor (highlighted in Figure 2)
from the negative terminal of the analog input
to aux is required for the loop to be complete.
The aux voltage is software selectable as 0,
12, or 24 VDC. Most analog instruments are
rated for a broad range of voltages (typically
10–30 VDC). Selecting the 24 volt option
makes voltage starvation situations much less
likely when multiple devices are present on
the current loop.
Take note of the analog jumper position on
the Legacy RTU and identify it as 0–5 volts or
4–20 mA. By default, it is set as 4–20.
See I/O Expansion section for expanded
analogs.
Note: Other components supported by
the aux-out must be rated appropriately.
For example, the ELK relay that
Mission offers has a resistor that can
be clipped for 24 VDC power.

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Output Relays
MyDro output relays have higher ratings than the Legacy RTUs (maximum AC
voltage is 120 volts, maximum DC is 30 volts, maximum current is 5 amps).
We discourage high voltage AC inside of the Mission enclosure for safety and
induced voltage reasons (see Figure 3).
Warning: The MyDro relay normally open (N/O) and normally closed (N/C)
terminals are opposite to that of Legacy units (highlighted in gure 3).
Figure 3:
Relay Connection Guide

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I/O Expansion
The MyDro relies on a different expansion module interface than the
Legacy RTUs, and Legacy expansion boards are not compatible with
the MyDro. See the MyDro Expansion Manual document (LI # MEM) for
full details.
The MyDro expansion communication cable (8’) is based on RS485 and capable
of long distances. If I/O expansion is present at this location consider the benets
of moving the MyDro expansion module outside of the enclosure (in the case of
the FlatPak enclosure, this is not optional).
The MyDro expansion modules support the same or better I/O characteristics
than the Legacy modules.
Table 1:
Expansion Module Difference Chart
Legacy Expansion MyDro Expansion
Total Supported One One of each type
Physical Connection Proprietary Modbus RS485 with power
Mission PN CP500
Pulse Input Dry, open collector
Up to 5 VDC
Dry
Up to 30 VDC
Digital Input Individual ground Common ground
Analog Input 0–5 V, 4–20 mA Same, requires change of internal
jumper and LCD conguration
Analog Output 4–20 mA
Max current load 300 ohms
4–20 mA, 0.5 ohm output
impedance, max current load
resistance 500 ohms

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Chapter 3: Rewiring and Enclosure Installation
Rewiring
The MyDro features removable terminals. Your strategy may involve removing
one wire at a time from the Legacy RTU and immediately terminating it onto the
corresponding removable terminal. Nevertheless, it is a good idea to photograph
the existing installation and label wires before decommissioning the Legacy RTU.
1. Turn AC power off to the Legacy RTU, remove the leads and either terminate
them to the corresponding terminal or temporarily insulate them. Repeat for
battery leads.
2. Unscrew the SMA connector from the antenna connector.
3. Remove the four screws holding the PCB down. These screws will be reused.
4. Refer to the appropriate section for reassembly information based on your
enclosure.
5. Reterminate remaining conductors into their respective removable terminals.
You may choose to power up the RTU and insert one bank of removable
terminals at a time so that any wiring problems can be more easily identied.
The removable terminals have been labeled to assist you with this step.

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FlatPak Retrot (see Figure 4)
1. Remove Legacy PCB hardware from existing FlatPak enclosure.
2. Extend standoffs by installing the four included standoffs (1/4” x #6–32) on
top of the existing standoffs on the enclosure back plane.
3. Secure the MyDro PCB into the enclosure by placing it on top of the
extended standoffs, use existing #6–32 screws.
4. Remove existing key reader and replace it with the one supplied. Terminate
the new key reader at the bottom right side of the PCB.
5. Remove the old noisemaker and ll the hole with the supplied knock-out plug.
The PCB includes an onboard noisemaker.
6. Replace lid with new one supplied when installation and testing is complete.
Figure 4:
FlatPak Retrot

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NEMA 1 Retrot (see Figure 5)
1. Remove Legacy PCB hardware from existing NEMA 1 enclosure.
2. Install adapter bracket onto existing standoffs with the four #6–32 screws
supplied. Use the holes for screwdriver access.
3. Install MyDro mainboard on adapter bracket. Secure with existing #6–32
screws.
4. Remove existing key reader and noisemaker and replace with knockout
plugs. Terminate the new key reader at the bottom right side of the PCB.
5. Replace lid with new one supplied when installation and testing is complete.
Figure 5:
NEMA 1 Retrot

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NEMA 4 Retrot (see Figure 6)
1. Remove Legacy PCB hardware from existing NEMA 4 enclosure.
2. Install MyDro mainboard on existing standoffs in enclosure.
3. Use the included standoffs (1/2” x #6–32) to secure the PCB to enclosure
backplate.
4. Place the MyDro cover over the PCB, and use the four #6–32 screws to
secure cover.
5. Replace lid with new one supplied when installation and testing is complete.
Put silicone on the thread of the new key reader.
Note: If you are upgrading a solar RTU, place the (4) additional standoffs
before installing the mainboard.
Figure 6:
NEMA 4 Retrot

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Conguration Adjustments
It is possible that the Legacy RTU had special settings. Certain settings will need
to be paged to the RTU from the web portal or by tech support, while others may
not be necessary with the enhanced electronics of the MyDro.
Congurable Settings Shown on the LCD
The following settings may be congured locally on the LCD screen with an
electric key programmed to access the “Cong.” screens.
Digital Input Setup:
• Channel: alternate between digital input channels
• Mode:
◦Dry Contact: no voltage on switched circuit, requires 1000 ohm EOL
resistor parallel to switch
◦Dry contact NF: no voltage on switched circuit, no EOL resistor
◦Load sensor: strap on current sensor, no EOL resistor, broken wire, or
failed sensor will show as wire fault
◦Load Sensor NF: strap on current sensor, no EOL resistor, no wire
supervision
◦Runtime: for items like pumps where statistics (runtimes, starts, etc.)
are desired. MyDro 150 allows runtime conguration on D1, D2, D3.
MyDro 850 allows runtime on all 8 onboard digital inputs. See main
manual for simultaneous runtime options on input 3 (M150) or input 8
(M850).
◦ Alarm: used for items like oats, where change of state should be sent
in real-time
◦ MyDro 150 congures simultaneous runtimes
• Disabled: No data is sent
• Debounce: Noise suppression feature for 10–90 seconds
Analog Input:
• Channel: alternate between analog input channels
• Mode: 0–5 V, or 4–20 mA
• Filter: consider high lter setting for volatile analog instruments like ow
meters. Filtering is implemented on rmware versions 14.2 and greater.

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Analog Scaling Setup
• Channel: alternate between analog input channels
• Offset: allows you to enter value if sensor is not at the bottom or top of
measured item
• Range: of sensor as described on the instrument name plate, or converted
value appropriate to engineering units. For example, 2.31 feet per PSI results
in a 0–23.1’ range on a 0–10 PSI pressure transducer.
• Units: engineering units as desired
Auxiliary Output Voltage:
• 0, 12, 24 VDC
• Make certain all items powered by auxiliary are compatible to this selection
Relay Communication Failure:
• De-energize: generally appropriate if pumping into a pressure tank
• No change: generally appropriate if tank can spill
• See Best Practices for Remote Control Applications document
Battery Test:
• Runs a routine that puts battery under load and returns nal voltage. This test
is performed daily and recorded on web portal.
• A good battery should result in a V-battery test reading of 12.1–12.4 volts,
assuming it as been installed and properly charged.
Server Connection:
Tech support will advise if it should be changed from default.
Miscellaneous
• Language
• Temperature (C or F)
• Audio
• Screen Saver
Congurable Settings NOT Shown on the LCD
Alarm threshold settings must be paged to the RTU.

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Chapter 4: Test the MyDro After Installation
and Commissioning
1. Check input voltages with a multi-meter.
2. Exercise all inputs and conrm that the LCD and web portal are displaying
the values correctly. Page relays and analog output (if in use) from the web
portal and conrm proper operation. As a reminder, the N/O and N/C termi-
nals on the output relays are opposite that of the Legacy RTU.
3. Conrm all automated remote control functions are working properly.
4. Conrm all fail-safe operations are working as desired. One way to do this is
to disconnect the antenna so that the RTU goes ofine.
5. Contact Mission Technical Support so that we can associate the new radio
identier (IMEI) with the data from the previous RTU.

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Installation Notes
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