Armstrong Design Envelope 4322 User manual

Design Envelope
4322 & 4372
Tango pumping unit with
permanent magnet 0.75-
7.5 kW motor
Installation and
operating instructions
File No: 102.80iec
Date: september 21, 2018
Supersedes: 102.80iec
Date: june 18, 2018

Note: Document subject to change.
contents
1.0 mechanical setup 4
1.1 precautions 4
1.1.1 instructions for safe use 4
1.1.2 ambient temperature 4
1.1.3 enclosure rating 4
1.1.4 storage 4
1.1.5 warranty 4
1.1.6 uncrating 4
1.1.7 handling design envelope 4322
& 4372 units 4
1.2 mechanical installation 5
1.2.1 location 5
1.2.2 installation 5
1.2.3 pump piping-general 8
1.2.4 alignment 9
2.0 electrical setup 9
2.1 precautions 9
2.1.1 ground leakage current 9
2.1.2 start/stop of pump 9
2.1.3 additional motor protection 9
2.1.4 motor thermal protection and
derating 9
2.2 electrical specification 11
2.3 electrical installation 11
2.3.1 power wiring 11
2.3.2 tools you will need 11
2.3.3 the main cover disassembly 12
2.3.4 control terminal wiring 13
2.3.5 analog / digital inputs 13
2.3.6 digital output 16
2.3.7 relay output 16
2.3.8 supply voltage 16
2.3.9 supply fusing 16
2.4 design envelope pump
controller wiring 17
2.4.1 battery 17
2.4.2 rs 485 wiring 17
2.4.3 ethernet and wifi connectivity 17
2.4.4 can bus wiring 17
2.4.5 networking options 17
3.0 networking controls 18
3.1 modbus ip & rtu 19
3.2 BACnet ip & ms/tp 22
4.0 operation 24
4.1 start-up checklist 24
4.2 starting pump 24
4.3 touch screen 25
4.3.1 login 25
4.3.2 logout 25
4.3.3 about 25
4.3.4 general settings 26
4.3.5 manual/auto mode 27
4.3.6 pump control 28
4.3.7 alarms & warnings 32
4.3.8 trend-graph 32
4.4 web interface 33
4.5 design envelope flow readout
tolerance 33
4.6 noise levels 33
5.0 control modes 33
5.1 constant flow 33
5.2 constant pressure 34
5.3 linear pressure 34
5.4 quadratic curve control 34
5.5 quadratic curve control with
minimum flow protection 34
5.6 quadratic curve control with
maximum flow protection 34
5.7 quadratic curve control with
minimum & maximum flow protection 35
5.8 parallel sensorless pump
control (pspc) 35
5.8.1 parallel sensorless pump control
for multiple single pumps 35
5.9 2*100% capacity split units 36
5.10 duty-standby mode 36
5.11 alternation 36
6.0 maintenance 36
6.1 general care 36
6.2 lubrication 37
6.3 mechanical seal 37
6.3.1 mechanical seal replacement
instructions for rigid split- coupled
pumping units (series 4300 & 4322) 37
6.3.2 mechanical seal replacement
instructions for close-coupled
pumping units (series 4380 & 4372) 38
6.4 system cleanliness 40
7.0 warnings and alarms 41
7.1 alarm summary for interfaces 41
7.2 warning summary for interfaces 42
8.0 fuse and wire recommendation 43
9.0 pump manager 44

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
4
1.0 mechanical setup
This manual contains specific information regarding the
safe installation, operation and maintenance of Armstrong
Design Envelope pumps. Read this manual carefully before
installing or using the product. If clarification is needed on
any point please contact Armstrong quoting the equipment
serial number.
1.1 precautions
1.1.1 instructions for safe use
No installation of this equipment should take place un-
less this document has been studied and understood.
Handling, transportation and installation of this equipment
should only undertaken by trained personnel with proper
use of lifting equipment. See later diagrams for lifting advice.
Refer to the pump nameplate for pump speed, pressure
and temperature limitations. The limits stated must not be
exceeded without written permission from Armstrong.
1.1.2 ambient temperature
Install the Design Envelope unit with adequate ac-
cess for routine maintenance. A minimum of 50 mm
(2") clearance is required at the fan inlet to facilitate
airflow. Where several Design Envelope units are
installed in close proximity, care must be taken to ensure that
there is no re-circulation of exhausted warm air.
To avoid the inverter unit getting overheated, the
ambient temperature is not to exceed 40°c(104°f)
average daily temperature. Operating in higher
ambient temperatures will require derating of the inverter.
Under normal operating conditions the pump surface
temperature may reach 68°c/ 155°f(Restricted Zone) to
80°c/176°f(Unrestricted Zone). Steps should be taken to
minimize contact or warn operators/users that normal op-
erating conditions will be exceeded. In certain cases, where
the temperature of the pumped liquid exceeds the above
stated temperature levels, pump casing temperatures may
exceed 212°f/100°c and not withstanding pump insulation
techniques appropriate measures must be taken to minimize
risk for operating personnel. The ambient temperature for
standard motors must be no greater than 104°f/40°c.
1.1.3 enclosure rating
The standard enclosure rating for Design Envelope 4322 and
Design Envelope 4372 integrated controls is ul Type12/
ipp55. If the pump is to be installed in a wet or dusty
environment, then a higher enclosure rating may be required
(contact Armstrong).
1.1.4 storage
Pumps not immediately placed into service, or removed from
service and stored, must be properly prepared to prevent
excessive rusting. Pump port protection plates must not be
removed until the pump is ready to connect to the piping.
Rotate the shaft periodically (at least monthly) to keep rotat-
ing element free and bearings fully functional.
For long term storage (longer than three months), the pump
must be placed in a vertical position in a dry environment.
Internal rusting can be prevented by removing the plugs at
the top and bottom of the casing and drain or air blow out all
water to prevent rust buildup or the possibility of freezing. Be
sure to reinstall the plugs when the unit is made operational.
Rustproofing or packing the casing with moisture absorb-
ing material and covering the flanges is acceptable. When
returning to service be sure to remove the drying agent from
the pump.
1.1.5 warranty
Armstrong’s warranty period for Design Envelope pumps
is [18] months from date of shipment, or [12] months from
date of installation, whichever comes first. Please refer to
File 9.10us / 9.10c for full terms and conditions. To receive
an additional [6] months of standard coverage, owner may
register the pump unit at
www.armstrongfluidtechnology.com/warrantyregistration
1.1.6 uncrating
Armstrong Design Envelope 4322 & 4372 Vertical In-Line
pumps are thoroughly inspected before shipment to assure
they meet with your order requirements. After removing the
pump from the crate, make sure the equipment is in good
order and that all components are received as called for on
the packing list. Any shortages or damage should be reported
immediately. Use extreme care in handling the unit, placing
slings and hooks carefully so that stress will not be imposed
on the integrated controls, pump or motor. Never place cable
slings around the pump shaft or integrated controls. The hoist
rings should be used to lift the complete pump assembly.
1.1.7 handling design envelope 4322 & 4372
units
To handle Design Envelope 4322 & 4372 units when received
on site, secure the pallet following uncovering the unit, then
hook straps as detailed below, and carefully lift the pumping
unit to stand the pump vertically upright. Lift only suciently
to remove the pallet, then lower onto a flat surface.
The pump and motor unit will free-stand on the casing ribs.
Extra care is required to ensure the integrated controls do not
get damaged during lifting and installation.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
5
Simply connect the lifting straps to the lifting rings on each
side of the unit.
As the lifting device is engaged (Using a spacer bar if neces-
sary) and the straps tighten ensure no part of the strapping
is touching any part of the control or motor fan cover. Lift the
pumping unit carefully from the pallet in this manner and al-
low the unit to stand upright on a flat surface and re-position
the straps, if necessary, to ensure safe and damage-free
transportation into the pipe installation.
fig. 1.1.6.1
important:
Do not run the pump for any length of time under very
low flow conditions at the maximum speed or with the
discharge valve closed.
To do so could cause the water in the casing to reach super
heated steam conditions and will cause premature failure and
could cause serious and dramatic damage to the pump and
surrounding area.
1.2 mechanical installation
1.2.1 location
In open systems, locate the unit as close as practical to the
liquid being pumped, with a short, direct suction pipe. Ensure
adequate space is left above and around the unit for opera-
tion, maintenance, service and inspection of parts.
In closed systems, where possible, the pumps should be
installed immediately downstream of the expansion tank /
makeup connection. This is the point of zero pressure change
and is necessary for eective pump operation. Do not install
more than one expansion tank connection into any closed
hydronic system.
Electric motor driven pumps should not be located in damp
or dusty location without special protection.
Airflow into the motor and/or motor fan should not be obstructed.
It is good practice to leave sucient space around equipment
for operation, maintenance, and service needs.
1.2.2 installation
When installing vertical in-line pumps, an important con-
sideration to accrue full added-value from the pump design
is to ensure that the pump is pipe-mounted and free to float
with any movement, expansion and contraction of the piping.
Should any vertical in-line pump use support to the structure
it is imperative that no pipe strain is imposed on the pump
flanges. Tell-tale pieces of equipment such as springs or
wae style neoprene isolation pads that distort with pres-
sure to indicate added piping weight, should be used under
pump supports should the pump not be truly pipe mounted.
a hanger supported pipe mounted
4322 & 4372 Vertical In-Line pumps may be installed
directly in the system piping with no additional support. Pipe
hangers are simply sized for the additional weight of the
pumping unit. Many pumps are installed in this manner and
can be mounted at sucient height to take zero floor space
fig. 1.2.1
2' or 3'
height
above
finished
floor
b pipe mounted supported at ceiling
Piping in many mechanical rooms is hung close to the ceiling
and larger pumps are mounted near ground level for ease of
maintenance. fig. 1.2.2 illustrates such an arrangement with
the piping supported at the ceiling and the vil unit installed
with an Armstrong Suction Guide and Flo-Trex valve. Many
very large vil pumps are installed in this manner.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
6
fig. 1.2.2
System inlet System outlet
Recommended
field pressure
gauge piping
arrangement Flo-trex valve
Split
coupler
Flush line
Drain connection
Suction
guide
Hangers support the weight of the filled
piping, pumps and fittings
Pipe hanger
(typ.) see
specification
for size and
type
Pet cock
(typ.)
2' or 3'
height above
finished floor
c discharge elbow for minimum footprint
Should additional space saving be required the discharge
spool piece may be replaced by a long-radius elbow.
fig. 1.2.3
Drain
Connection
Suction
Guide
System inlet
Recommended field
pressure gauge
piping arrangement
Flo-trex valve
Hangers support the weight of the
filled piping, pumps and fittings Pipe hanger
(typ.) see
specification for
size and type
System outlet
Split coupler
Flush line
d with additional pipe supports
fig. 1.2.4 illustrates a similar arrangement to fig. 1.2.2
with additional floor mounted pipe-stools isolated from the
structure by wae style neoprene isolation pads under the
Armstrong Suction Guide and Flo-Trex valve.
fig. 1.2.4
Drain connection
Suction
Guide
Neoprene
isolation
pad
System inlet
Recommended
field pressure
gauge piping
arrangement
Pipe support
Flo-trex valve
Pet cock
(typ.)
Pipe hanger
(typ.) see
specification
for size and
type
System outlet
Split
coupler
Flush line
2' or 3'
height
above
finished
floor
Hangers support the weight of the
filled piping, pumps and fittings
e floor saddle support
Floor mounted saddle supports (fig. 1.2.5) are typical for
condenser water pumps where cooling tower base is at the
mechanical room elevation.
fig. 1.2.5
Flo-Trex Valve
f with stanchion plates
Where required, additional floor support may be used as
shown in fig. 1.2.6 Note that the pump should not be rigidly
attached to the column. Leave a small gap between pump
and column or install a ‘wae’ isolation pad under the pump.
It is critical that piping be installed in such a manner that the
pump does not become a pipe support.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
7
fig. 1.2.6
Isolation Pads
Stanchion Plates
g seismic region installation
fig. 1.2.7 illustrates installations with stanchion plates for
seismically active regions. Seismically rated isolation pads
or snubbers with bolts isolated from the stanchion plates are
installed to restrain the pump during a seismic event. Pipe
hangers carry the weight of the equipment as seismic com-
ponents are designed only to restrain the equipment during a
seismic event.
fig. 1.2.7
h mounting in grooved pipe systems
Many Vertical In-Line pumps are piped successfully into
grooved piping systems. In-line pumps are supported well
by grooved piping however flange adapter locking devices
or a welded flange at the pump should be used to prevent
the possibility of pipe mounted pumps rotating in the piping.
Armstrong oers grooved suction guides with cast-in outlet
flanges and Flo-Trex valves with Armgrip™ fittings to prevent
this possibility.
fig. 1.2.8
Drain connection
Suction guide
System inlet
Recommended field
pressure gauge
piping arrangement Flo-Trex valve
Pet cock
(typ.)
Pipe hanger
(typ.) See
specification for
size and type
System outlet
Split coupler
Flush
line
Gruvlok 7000 flex
coupling (typ.)
7700 butterfly
valve
Hangers support the weight of the
filled piping, pumps and fittings
i mounted on rigid base without flexible
connectors
Connecting the pump to a permanent rigid base (fig. 1.2.9)
is not recommended unless isolated from the piping by
flexible connectors and the base isolated from the building
structure on an inertia base. (fig. 1.2.9 is generally accept-
able when using plastic piping).
fig. 1.2.9
j horizontal shaft
mounting
Design Envelope pump units with Permanent Magnet motor
can be installed in a horizontal shaft orientation
fig. 1.2.10
k
The motor and integrated control assembly has one factory
orientations - facing the discharge.
If not convenient for other equipment, motor and controls
may be rotated at installation site at 90˚ increments and the
rotating assembly at up to 45˚ in either direction, provided
Seismically rated snubbers or pads and
conrete foundation
Stanchion plates

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
8
there are no physical clashes with other equipment. Remove
the clamp ring between the casing and adaptor/pedestal and
careful rotate the rotating assembly. Note that the seal flush
line may need to be replaced to fit the new orientation.
fig. 1.2.11
l clearance note
fig. 1.2.12
important:
All split-coupled Design Envelope
pumps contain a tapped hole in the motor bracket above the
discharge flange (see fig.1.2.13) for draining the well. Pipe
this drain hole to a floor drain to avoid overflow of the cavity
caused by collecting chilled water condensate or from seal
failure.
l tapped collection well on design envelope
4322
fig. 1.2.13
1.2.3 pump piping-general
Never connect a pump to piping, unless extra care is taken
to measure and align the piping flanges well. Always start
piping from pump.
Use as few bends as possible and preferably long radius elbows.
Do not use flexible connectors on the suction or discharge of
a vertical in-line pump, unless the pump is rigidly mounted to
a foundation.
Ensure piping exerts no strain on pump as this could distort
the casing causing breakage or early failure due to pump
misalignment.
All connecting pipe flanges must be square to the pipework
and parallel to the pump flanges.
Suction and discharge pipes may be increased or decreased
at pump nozzle to suit pump capacity and particular condi-
tions of installation. Use eccentric reducers on suction con-
nection with flat side uppermost.
Layout the suction line with a continual rise towards the pump
without high points, thus eliminating possibility of air pockets
that may prevent the pump from operating eectively.
A strainer of three or four times the area of the suction pipe,
installed in the suction line, will prevent the entrance of for-
eign materials into the pump. 5 mm (C/af") diameter perfora-
tions in the strainer is typical.
In open systems, test suction line for air leaks before starting;
this becomes essential with long suction line or static lift.
Install, at the pump suction, a straight pipe of a length
equivalent to four or six times its diameter; this becomes
essential when handling liquids above 49°c(120°f).
Armstrong suction guides may be used in place of the
straight pipe run and in-line strainer.
Install an isolation valve in both suction and discharge lines
on flooded suction application; these valves are used primar-
ily to isolate the pump for inspection or repair.
Install a non-slam non-return check valve in discharge line
between pump and isolation valve to protect pump from
excessive back pressure and to prevent water running back
through the pump in case of driver failure on open systems.
Armstrong ftv triple function valve may be installed in
place of separate check and isolation valves. The ftv valve
also includes a throttling feature which must not be used to
throttle with variable speed pump operating in variable flow
systems; unless the pump is oversized and operating beyond
the published pump curve.
1 m(36") clearance in front of
controls is required.
Seal leaks or condensate
drain hole. Plumb to drain for
area cleanliness.
When reinstalling the clamp, tighten the clamp nut to
90-100 in-lb torque.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
9
1.2.4 alignment
Design Envelope units are accurately aligned at the factory
prior to being shipped and do not need re-aligning when
installed. Alignment on a Design Envelope unit may be veri-
fied by assuring an equal and parallel gap between coupling
halves on both sides of the coupling.
2.0 electrical setup
2.1 precautions
Safety, risk of death
All electrical connections should be carried out by
a qualified and authorised electrician in accordance
with local site regulations and the latest issue of the
iee regulations.
Before removing the main cover, the system must be
disconnected from the mains supply. After switch-
ing o, wait for at least 4minutes for the capacitors
to discharge before opening the cover.
caution
High voltage testing (Megging) of the motor/
inverter may cause damage to the electronic
components and therefore should not be carried out.
2.1.1 ground leakage current
Ground leakage current is primarily caused by the
capacitance between motor phases and the motor
frame. The Radio Frequency Interference (rfi) filter
contributes additional leakage current, as the filter circuit is
connected to ground through capacitors.
The size of the leakage current to the ground depends on the
following factors, in order of priority:
1Switching frequency
2Motor grounded on site or not
The leakage current is of importance to safety during han-
dling/operation of the Design Envelope pump if (by mistake)
the on-board inverter has not been grounded.
Since the leakage current is >3.5mA (approx. 4-20
mA), reinforced Grounding must be established
which is required if en 50178 is to be complied with.
Never use elcb relays that are not suitable for dc fault
currents (type A).
If elcb relays are used, they must be:
• Suitable for protecting equipment with a direct current con-
tent (dc) in the fault current (three-phase bridge rectifier)
• Suitable for power-up with short charging current to Ground
• Suitable for a high leakage current
2.1.2 start/stop of pump
The number of starts/stops via the mains voltage must not
exceed one-time per minute.
If a higher number of starts/stops is required, then the start/
stop digital input must be used (mains voltage directly con-
nected). This is the preferred method of starting and stop-
ping Design Envelope Pumps.
The three phase mains must be isolated before performing
maintenance of the pump.
2.1.3 additional motor protection
With the exception of supply fuses / MCB’s to protect
the installation (for over-current and short-circuit
protection), no additional overload or over-temperature
protection is required (i.e. thermal overloads).
Protection features include:
• Mains phase loss
• Over voltage
• Under voltage
• Electronic thermal motor protection
• Short circuit on motor terminals
• Ground fault on motor terminals
• Over temperature
2.1.4 motor thermal protection and derating
The Design Envelope motors are thermally protected in case
limits are exceeded (140°c/284°f), another protection is
provided thought the drive.
a derating for ambient temperature
The ambient temperature (tamax) is the maximum
temperature allowed.
If the motor is operated at temperatures above 40°c(104°f),
a derating of the continuous output current is necessary.
0
20
40
60
80
100
120
20 30 40 50 60 70
outputcurrent
tambient[°c]
deratingforambienttemperature

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
10
b derating for air pressure
Below 1000 m altitude no derating is necessary. Above 1000 m
the ambient temperature (ta) or max. rated output current (in)
must be de-rated in accordance with the following diagram.
See the below diagram for derating of output current versus
altitude at ta = Max. 40°c(104°f)
c derating for running at low speed
When a centrifugal pump or a fan is controlled by a 4322 &
4372 type A Motor, it is not necessary to reduce the output
at low speed because the load characteristic of the centrifu-
gal pumps/ fans, automatically ensures the necessary reduc-
tion. The 4322 & 4372 Permanent Magnet motors running
constant load torque applications continuously at low speed
must be de-rated (see diagram) or an independent fan must
be used.
In the Permanent Magnet motor all control terminals are sup-
plied from or in connection with extra low voltage (pelv).
The components that make up the electrical isolation, as
described below, also comply with the requirements con-
cerning higher isolation and the relevant test as described
in en 50178. The galvanic isolation can be shown in three
locations (see drawing below),namely:
1Power supply (smps) including signal isolation of VDC-
bus, indicating the intermediate voltage.
2Gate drive that runs the IGBTs (opto couplers)
3DCbus Voltage transducer (opto couplers)
4Current transducers (Hall Eect-Based Current Sensor).
31 4 2
M
d earth leakage current
Earth leakage current is primarily caused by the capacitance
between motor phases and the motor frame. The rfi filter
contributes additional leakage current, as the filter circuit is
connected to earth through capacitors (Cy).
The size of the leakage current to the ground depends on the
following factors, in order of priority:
1Switching pwm frequency
2Motor grounded on site or not
The leakage current is of importance to safety during han-
dling/operation of the drive if (by mistake) the drive has not
been earthed.
e over voltage protection
The voltage in the intermediate circuit is increased when the
motor acts as a generator. This occurs in two cases:
1The load generates energy.
2During deceleration (ramp-down) if the moment of inertia
is high, the load is low and the ramp-down time is too
short for the energy to be dissipated as a loss in the motor
frequency converter, the motor and the installation.
The drive turns o to protect the igbt transistors and the
intermediate circuit capacitors when a certain voltage level is
reached on DCbus.
f mains supply interference/harmonics
A motor integral drive takes up a non-sinusoidal current
from mains. A non-sinusoidal current can be transformed
by means of a Fourier analysis and split up into sine wave
currents with dierent frequencies, i.e. dierent harmonic
currents in with 50 Hz as the basic frequency.
Some of the harmonic currents might disturb communication
equipment connected to the same transformer or cause reso-
nance in connection with power-factor correction batteries.
To ensure low, harmonic currents, for the residential and
commercial environments, an optional harmonic filter
is necessary.
0
20
40
60
80
100
010002000300
04
000
ratedtorque [%]
ratedspeed[rpm]
deratingforrunningatlowspeed
0
20
40
60
80
100
0500 1000 1500 2000 2500 3000 3500
ratedtorque [%]
altitude[m]
deratingforair pressure

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
11
2.2 electrical specification
Main supply (l1 l2 l3)
Supply frequency 48 - 62Hz
Supply voltage 1 × 200-230v± 10%,
3 × 200-230v± 10%,
3 × 380-480v± 10%,
3 × 575-600v± 10%
Max. imbalance of supply
voltage
± 2% of rated supply
Switching on supply voltage Once every 2minutes
Output ratings
Output Current 100% Drive Rated Power
continuously
Overload Capacity 150% for 60 secs
Digital inputs
Programmable digital inputs 2
Voltage level 0-24Vdc (user selectable npn
or pnp)
Analog input
Programmable analog voltage
input
1
Voltage level 0:10Vdc
Input resistance Rin 10KΩ
Resolution 12bit
Programmable analog current
inputs
1
Current range 0:20mA
Input resistance Rin 500Ω
Relay Output
Programmable relay output 2(n.o. n.c. com)
Max terminal load 250Vac 2A 500VA
Externals
Enclosure ip55
Vibration test ec 60068-2-6
Max relatively humidity 95% (iec 60068-2-3)
Operating ambient
temperature
0:40°c
Storage ambient Temperature - 25°c:60°c
Min. ambient temperature at
full operation
0°c
Altitude 0 - 3000m, de-rate 1% per 100m
above 1000m
Compliance with Standards
en 61800-3:2004 Adjustable speed electrical power drive
systems. emc requirements
iec 61800-5-1 Adjustable speed electrical drive systems
- part 5-1: safety requirements - electri-
cal, thermal and energy
en 60204-1 Safety of machinery - electrical emc
equipment of machines-part 1: general
rules
2.3 electrical installation
2.3.1 power wiring
fig 2.3.1 Upper right corner of the motor. Use Access port
#1 for power wiring and ground.
pin1 l1 l1 power supply
pin2 l2 l2 power supply
pin3 l3 l3 power supply
2.3.2 tools you will need
Access1
Access2
Ground
l3
Access1
Access2l2
l1
2.5 &
3 mm

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
12
2.3.3 the main cover disassembly
1
2
3
4
5
6
ethernet
cable
router
caution
When you remove the front cover, pay attention to the
wiring connection of the control board, unplug the con-
nection and remove completely the cover.
power
from mcc
3 mm
a
b
2.5 mm
a
b
warning
Before removing the main cover, the system must be
disconnected from the mains supply. After switching
o, wait for at least 4minutes for the capacitors to
discharge before opening the cover.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
13
2.3.4 control terminal wiring
fig 2.3.2 Motor Control Board
2.3.5 analog / digital inputs
a wiring
Digital
Input
Wiring
Analog
Input
Wiring
The number of starts/stops via the mains voltage
must not exceed one-time per minute.
If a higher number of starts/stops is required then
the start/stop digital input must be used (mains volt-
age directly connected). This is the preferred method
of starting and stopping Design Envelope Pumps.
The three phase mains must be isolated before
performing maintenance of the pump.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
14
Personnel requirements
1 Armstrong Tier 3training or equivalent
2 Ability to terminate simple control wiring
3 Ability to configure Armstrong controls
4 All work will be done on low voltage, however, when
removing the controller cover high voltage may be
exposed. An electrician license is required in some areas
i wiring digital inputs
1 Connect one port of the contact to digin1 or digin2.
2 Connect the other port to +24vext
ii wiring analog inputs
a for speed control through analog input
1 Connect signal source to anin1 Or anin2
2 Connect the other port to gnd
b for speed control through differential
pressure sensor
1 Connect signal source to anin1 Or anin2
2 Connect the power port to +24vext or external +24v
b setting the analog / digital inputs from
web interface
i setting the digital inputs from the web
interface
Login to the web interface (Check Web Interface in section
4.4)
From Setting Pump
Under Digital Input 1/ Digital Input 2, Select On/O and hit
Update
ii setting the analog inputs from the web
interface
Login to the web interface (Check Web Interface in section
4.4)
Go to Setting Pump
a setting speed control through current
signal 4-20ma
Under Control Mode, select InputsAnalog In 1, or
Analog In 2 speedCurrent click Update
b setting speed control through voltage signal
0-10v
Under Control Mode, select InputsAnalog In 1, or
Analog In 2 speed Voltage click Update

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
15
c setting speed control through differential
pressure (dp) sensor 4-20ma
1 Under Control Mode, select InputsAnalog In 1
or Analog In 2Pressure Current
2 Set the DP sensor setting:
• Min(mA): 4
• Max(mA): 20
• Min Pressure: the minimum limit in the DP sen-
sor
• Max Pressure: the max limit in the DP sensor
• Zone 1 Pressure set point: the desire set pres-
sure point
3 Click Update
d setting speed control through differential
pressure (dp) sensor 0-10v
1 Under Control Mode, select Inputs Analog In 1
or Analog In 2 Pressure Voltage
2 Set the DP sensor setting:
• Min(V): 0
• Max(V): 10
• Min Pressure: the minimum limit in the DP sensor
• Max Pressure: the max limit in the DP sensor
• Zone 1Pressure set point: the desire set pressure
point
3 Click Update

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
16
c setting the differential pressure (dp) sensor through lcd
2.3.6 digital output
If either of the digital outputs are to be used for voltage
dierential, a 500 ohm resistor (supplied by others) must
be connected between the respective digital output and the
24VEXT terminal. Refer to fig 2.3.6
fig 2.3.6
2.3.7 relay output
J5 & J8 for Relay output
j8
n.o. 2 Relay n.o.
n.c. 2 Relay n.c.
com2 Relay 2A 250Vac
j5
n.o. 1 Relay n.o.
n.c. 1 Relay n.c.
com 1 Relay 2A 250Vac
2.3.8 supply voltage
The supply voltage details can be found on the 4300 & 4380
nameplate. Please ensure that the unit is suitable for the
electrical supply on which it is to be used. The mains supply
for Design Envelope pumps is as follows:
1 × 200-230v± 10%,
3 × 200-230v± 10%,
3 × 380-480v± 10% ,
3 × 575-600v± 10%
Frequency - 50/60Hz
2.3.9 supply fusing
Branch circuit protection
In order to protect the installation against electrical and fire
hazard, all branch circuits in an installation, switch gear, ma-
chines etc., must be short-circuit and over-current protected
according to the national/international regulations. Please
refer to section 8.0 (Fuse and wire recommendation).
Short circuit protection
The inverter must be protected against short-circuit to avoid
electrical or fire hazard. The frequency converter provides full
short circuit protection in case of a short-circuit on the motor
output.
Vdig_out2
Vdig_out1
V
V
500 Ohm
500 Ohm
Set the current\ voltage DP sensor setting:
• Set Sensor Signal Intervals
• Set Sensor Pressure range
• Set desire zone pressure
• Click Confirm

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
17
2.4 design envelope pump
controller wiring
fig 2.4 Controller Board
fig 2.4a
rs-485
bms
bms
Modbus
CAN bus
2.4.1 battery
The battery is used to power the real-time clock whenever the pump is dis-
connected from mains power. It is recommended the battery be changed
periodically every 2to 3years.
2.4.2 rs 485 wiring
For Modbus rtu or BACNet ms/tp connection to building automation
system, connect rs485 cable to this port per fig. 2.4
2.4.3 ethernet and wifi connectivity
For BACNet tcp/ip connection to building automation system, connect
connect rj-45 cable to this port per fig. 2.4
2.4.4 can bus wiring
Connections, Low, High, and Ground as per fig. 2.4
2.4.5 networking options
A = + Positive
B = - Negative
G = Ground

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
18
3.0 networking controls
For connection to the building automation system (bas),
the pump needs to be properly configured to the network.
Ensure the rs485 cable is connected to the controller board
(fig.2.4). Or if connecting to the bas via router, ensure that
the rj-45 cable is connected to the controller board
(fig. 2.4 ).
The pump controls can be configured from the touchscreen
or the webserver.
For BACNet ms/tp or tcp/ip: Enter the BACNet address,
baud rate, and unique device instance number (as applicable)
For Modbus rtu or tcp/ip: Enter the Modbus address, baud
rate, and parity stop bits (as applicable)

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
19
3.1 modbus ip & rtu
function code
start address modbus
register description # of
registers
change
during
operation
data
type unit notesread write
0×01 0×03 0×05 0×06
Status
x100 101 Actual speed 1n/a uint16 1 rpm The current speed of the vfd
in rpm.
x101 102 Actual speed 1n/a uint16 0.1 %
The current speed of the vfd
in % of the nominal motor
speed.
x102 103 Motor input
power 2n/a uint32 0.01 Units as configured on pump
control module.
x104 105 Motor input
voltage 1n/a uint16 0.1 V Voltage delivered by the vsd
to the motor.
x105 106 Motor input
current 2n/a uint32 0.01 A Current delivered by the vsd
to the motor.
x107 108 Sensorless
head 2n/a uint32 0.01 Units as configured on pump
control module.
x109 110 Sensorless
flow 2n/a uint32 0.01 Units as configured on pump
control module.
x111 112 Total flow 2n/a uint32 0.01 Used for parallel sensorless
mode
x113 114 Total power 2n/a uint32 0.01 Used for parallel sensorless
mode
x115 116
Number of
running
pumps
1n/a uint16 —Used for parallel sensorless
mode
x116 117 Max sensor-
less flow 2n/a uint32 0.01 Units as configured on pump
control module.
x118 119 Max sensor-
less head 2n/a uint32 0.01 Units as configured on pump
control module.
x120 121 btu/h 2n/a uint32 —Not implemented
i/o
x200 201 Digital in 1n/a uint16 —Digital input 1is bit 0and
input 2 is bit 1.
x201 202 Analog in 12n/a uint32 0.01 V,
0.01 mA
Units as configured on Pump
Control Module
x203 204 Analog in 22n/a uint32 0.01 V,
0.01 mA
Units as configured on Pump
Control Module
x205 206 Analog Out 11n/a uint16 0.01 mA
x206 207 Digital Out 1n/a uint16 —Digital output 1is bit 0and
output 2is bit 1.
x207 208 Relays 1n/a uint16 —Relay 1is bit 0and relay 2is
bit 1.
Units
x250 251 Flow units 1n/a uint16 —1= l/s; 2= m3/h;
3= g/m
x251 252 Pressure units 1n/a uint16 —1= bar; 2= kPa;
3= psi; 4= ft; 5 = m
x252 253 Power units 1n/a uint16 —1= kW; 2= hp
x253 254 Speed units 1n/a uint16 —1= rpm; 2= %
x254 255 Temperature
units 1n/a uint16 —1= °c; 2 = °f

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
20
function code
start address modbus
register description # of
registers
change
during
operation
data
type unit notesread write
0×01 0×03 0×05 0×06
Counters
x275 276 Total pump
running hours 2n/a uint32 1h
x x 277 278 Trip pump
running hours 2n/a uint32 1h Writing 0to this register
resets the counter.
x279 280
Total
controller
running hours
2n/a uint32 1 h
x281 282
Present
controller
running hours
2n/a uint32 1 hThe running hours since the
controller was powered on.
x283 284
Total pump
running kWh
counter
2n/a uint32 1kWh
x x 285 286
Trip pump
running kWh
counter
2n/a uint32 1kWh Writing 0to this register rests
the counter.
x287 288 Total btu
counter 2n/a uint32 — Not implemented
x x 289 290 Trip btu
counter 2n/a uint32 — Not implemented
Control Settings
x300 301 Control mode 1Yes uint16 —
1= Parallel
2 = i/o
3= Remote
4= Constant flow
5= Constant pressure
6= Linear pressure
7= Quadratic pressure
8= Quad pressure max.
9= Quad pressure min.
10 = Quadratic
pressure max/min
x x 301 302 hoa state 1Yes uint16 —
0 = O
1= Hand
2= Auto
x x 302 303 Active
parameters 1Yes uint16 —
1= standard
2= mode 1(heating mode)
3 = mode 2(cooling mode)
x x 303 304 Minimum
speed limit 1Yes uint16 0.1 Units as configured on pump
control module.
x x 304 305 Maximum
speed limit 1Yes uint16 0.1 Units as configured on pump
control module.
x x 305 306 Hand mode
speed 1Yes uint16 0.1 Units as configured on pump
control module.
x x 306 307 bms set speed 1Yes uint16 0.1 Units as configured on pump
control module.
Alarms and Warnings
x400 401 Alarms 2n/a uint32 —Refer to alarms table for bit
positions
x402 403 Warnings 2n/a uint32 —Refer to alarms table for bit
positions
xx404 405 Acknowledge
Warnings 2Yes uint32 —32-bit field corresponding to
the warning field