Armstrong Design Envelope 4322 User manual

Design Envelope
4322 & 4372
Tango pumping unit
with permanent magnet
motors up to 10 hp
Installation and
operating instructions
File No: 102.80
Date: december 12, 2022
Supersedes: 102.80
Date: november 22, 2021

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 5
1.2 mechanical installation 5
1.2.1 location 5
1.2.2 installation 5
1.2.3 pump piping-general 9
1.2.4 alignment 9
2.0 electrical setup 10
2.1 precautions 10
2.1.1 ground leakage current 10
2.1.2 start/stop of pump 10
2.1.3 additional motor protection 10
2.1.4 motor thermal protection and derating 10
2.2 electrical specification 11
2.2.1 depm 11
2.2.2 frame 71 12
2.2.3 depm 2 13
2.3 electrical installation 14
2.3.1 power wiring 14
2.3.1.1 power wiring for frame 71 motors –
1 phase 14
2.3.1.2 power wiring for frame 71 motors –
3 phase 14
2.3.1.3 power wiring for depm motors 15
2.3.1.4 power wiring for depm 2 motors 15
2.3.2 tools you will need 15
2.3.3 the main cover disassembly 15
2.3.3.1 main cover disassembly – frame 71 motors 15
2.3.3.2 the main cover disassembly- depm motors 16
2.3.3.3 the main cover disassembly-depm2 motors 17
2.3.4 control terminal wiring 18
2.3.4.1 control terminal wiring for
frame 71 motors 18
2.3.4.2 control terminal wiring for depm motors 18
2.3.4.3 control terminal wiring for
depm2 motors 19
2.3.5 analog / digital inputs 19
2.3.5.1 analog / digital inputs for
frame 71 motors 19
2.3.5.2 analog / digital inputs for
depm motors 20
2.3.5.3 analog / digital inputs for
depm2 motors 21
2.3.6 analog / digital output 21
2.3.6.1 analog output for frame 71 motors 21
2.3.6.2 digital output for frame 71 motors 21
2.3.6.3 analog output for depm motors 21
2.3.6.4 digital output for depm motors 21
2.3.6.5 analog output for depm2 motors 21
2.3.6.6 digital output for depm2 motors 21
2.3.7 relay output 22
2.3.7.1 relay output for frame 71 motors 22
2.3.7.2 relay output for depm motors 22
2.3.7.3 relay output for depm2 motors 22
2.3.8 supply voltage 22
2.3.9 supply fusing 22
2.4 design envelope pump controller wiring 23
2.4.1 battery 23
2.4.2 ethernet connectivity 23
2.4.3 can bus wiring 23
2.4.4 rs 485 wiring 23
2.4.5 networking options 23
3.0 networking controls 24
3.1 modbus register map – version 1 -
for firmware v1.16 and older 25
3.2 BACnet objects – version 1 -
for firmware v1.16 and older 27
3.3 modbus register map – version 2 -
for firmware v1.17 and newer 29
3.4 BACnet objects – version 2 -
for firmware v1.17 and newer 31
4.0 operation 33
4.1 start-up checklist 33
4.2 starting pump 33
4.2.1 auto flow balancing 33
4.3 touch screen 34

Note: Document subject to change.
4.3.1 login 34
4.3.2 logout 34
4.3.3 about 35
4.3.4 general settings 36
4.3.5 manual/auto mode 37
4.3.6 pump control 38
4.3.7 alarms & warnings 40
4.3.8 trend-graph 41
4.3.9 brightness adjustment 41
4.3.10 touch screen calibration 42
4.3.11 data logging 43
4.4 web interface 44
4.4.1 connecting via ethernet 44
4.4.2 connecting via wifi 44
4.5 design envelope flow readout
tolerance 46
4.6 noise levels 46
5.0 control modes 47
5.1 constant flow 47
5.2 constant pressure 47
5.3 linear pressure 47
5.5 quadratic curve control with
minimum flow protection 47
5.6 quadratic curve control with
maximum flow protection 47
5.7 quadratic curve control with
minimum & maximum flow protection 48
5.8 parallel sensorless pump control (pspc) 48
5.8.1 embedded parallel sensorless
pump control for multiple pumps 48
5.8.2 modifying motor ramp up and down time 49
5.8.3 three different control modes
can be accessed 50
5.8.4 fallback percentage of maximum speed 50
5.8.5 standby pumps 50
5.9 2*100% capacity split units 50
5.10 alternation 50
5.11 constant pressure control 51
5.12 dual season setup 51
5.13 sensored control 51
5.13.1 adding dp sensors through lcd screen 51
5.13.2 adding dp sensors from webserver 51
5.14 bypass valve control 52
6.0 maintenance 54
6.1 general care 54
6.2 lubrication 54
6.3 mechanical seal 54
6.3.1 mechanical seal replacement instructions
for rigid split- coupled pumping units
(series 4300 & 4322) 55
6.3.2 mechanical seal replacement instructions
for close-coupled pumping units
(series 4380 & 4372) 56
6.4 system cleanliness 58
7.0 warnings and alarms 58
7.1 alarm summary for interfaces 58
7.2 warning summary for interfaces 59
8.0 fuse and wire recommendation 60
9.0 pump manager 61
10.0 connectivity kit 61

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 2" (50
mm) 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 help prevent the DEPM unit from over-heating, the
ambient temperature is not to exceed the average daily
temperature. Operating in higher ambient tempera-
tures will require derating of the depm unit (See section 2.1.4 for
details).
Under normal operating conditions the pump surface tempera-
ture may reach 155°f/68°c(Restricted Zone) to 176°f/80°c
(Unrestricted Zone). Steps should be taken to minimize contact
or warn operators/users that normal operating 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 mea-
sures must be taken to minimize risk for operating personnel.
1.1.3 enclosure rating
The standard enclosure rating for Design Envelope 4300 and
Design Envelope 4380 integrated controls is UL Type 12 / ip55. If
the pump is to be installed in a wet or dusty environment, then
the UL Type 4x (ip66) enclosure is available. UL Type 4x units
are supplied with a touchscreen cover to protect the interface
from uv degradation, and a weather shield to protect the motor
fan from freezing rain or snow.
1.1.4 storage
Pumps not immediately placed into service, or removed from
service and stored, must be properly prepared to prevent exces-
sive 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 rotating
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. Rustproof-
ing or packing the casing with moisture absorbing 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 six
[6] months of standard coverage, the 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 packaging, make sure the equipment is in good

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
5
order and that all components are received as called for on the
packing list. Any shortages or damage should be reported im-
mediately. 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. 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 necessary)
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 allow 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. 1.1.1
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 operation,
maintenance, service and inspection of parts.
In closed systems, where possible, the pumps should be installed
immediately downstream of the expansion tank /make-up con-
nection. This is the point of zero pressure change and is neces-
sary 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 locations without special protection.
Airflow into the motor and/or motor fan should not be obstructed.
1.2.2 installation
When installing Vertical In-Line pumps, an important consid-
eration 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. If a Vertical
In-Line pump uses supports that rest on the base 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 pressure 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
For application with no suction guide, straight pipe of a length equivalent up to 4times its
diamater for 1.5-6" pumps and 6times diamater for 8" to 12" pumps will be required.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
6
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.
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
For application with no suction guide, straight pipe of a length equivalent up to 4
times its diamater for 1.5-6" pumps and 6times diamater for 8" to 12" pumps
will be required.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
7
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.
fig. 1.2.6
Isolation Pads
Stanchion Plates
g seismic region installation
fig. 1.2.7 illustrates installations with stanchion plates for seis-
mically active regions. Seismically rated isolation pads or snub-
bers 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 components are de-
signed only to restrain the equipment during a seismic event.
fig. 1.2.7
Seismically rated snubbers or pads and
conrete foundation
Stanchion plates
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 help prevent pipe mount-
ed pumps from rotating in the piping. Armstrong oers grooved
suction guides with cast-in outlet flanges and Flo-Trex valves
with Armgrip™ fittings to reduce this possibility.
fig. 1.2.8
Dr
ain 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 it is isolated from the piping by
flexible connectors and the base is isolated from the building
structure on an inertia base. (fig. 1.2.9 is generally acceptable
when using plastic piping).
fig. 1.2.9

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
8
j horizontal shaft mounting
Design Envelope pump units with Permanent Magnet motors
can be installed in a horizontal shaft orientation
fig. 1.2.10
kThe motor and integrated control assembly has one fac-
tory 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, pro-
vided there are no physical clashes with other equipment.
Remove the clamp ring between the casing and adaptor/
pedestal and carefully 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 wa-
ter condensate or from seal failure.
m tapped collection well on design envelope 4322
fig. 1.2.13
Seal leaks or condensate
drain hole. Plumb to drain for
area cleanliness.
The working clearance in front of
the controls should be sucient for
access to service the controls
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
1.2.3 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 conditions of
installation. Use eccentric reducers on suction connection 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 foreign
materials into the pump. C/af" (5 mm) diameter perforations 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 120°f (49°c).
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 primarily 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 pumps operating in variable flow systems, unless
the pump is oversized and operating beyond the published
pump curve.
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 verified by assur-
ing an equal and parallel gap between coupling halves on both
sides of the coupling.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
10
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.
For retrofit applications with multiple pumping units
operating in parallel, the ampacity of conductors, ratings
of switches, branch-circuit, short circuit and ground-fault
protection should be reviewed prior to installation
(Reference nec/nfpa 70 section 430, or oesc section 28).
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.
Note, all drives have stored charge and all motors will
generate some amount of voltage to keep the drive
charged while spinning. If power is removed for more than
5minutes and pump is still spinning, the check valve on
the outlet of the pump may be defective, allowing the
pump to spin backwards and continue to generate
voltage.
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 handling/
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. 4-20mA),
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 stopping
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, and additional protection is provided
through the drive.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
11
a depm ambient temperature de-rating
If the motor is operated at temperatures above 104°f (40°c)
or 113°f (45°c) (see motor frames below), a derating of the
continuous output current (or power) is necessary.
power range
depm
frame
size
output current available by %
based on ambient temperature
113°f
(45°c)
122°f
(50°c)
131°f
(55°c)
0 - 3hp
depm 90
100% 100% 100%
5hp 100% 90% 80%
7.5hp 100% 80% 60%
0 - 7.5hp depm 112 100% 100% 100%
10hp 100% 80% 60%
power
range
depm frame
size
output current available by %
based on ambient temperature
113°f
(45°c)
122°f
(50°c)
131°f
(55°c)
0 - 0.75hp
depm 71
100% 100% 100%
1 hp 100% 100% 95%
1.5 - 2hp 100% 95% 90%
0 - 2hp depm2 90s* 100% 100% 95%
3 - 7.5hp depm2 90 100% 95% 90%
0 - 7.5hp depm2 112 100% 95% 90%
10hp 100% 95% 90%
*90s for 575v only
b 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
handling/operation of the drive if (by mistake) the drive has
not been earthed.
c 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.
d 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
resonance in connection with power-factor correction batteries.
To ensure low, harmonic currents, for the residential and com-
mercial environments, an optional harmonic filter is necessary.
2.2 electrical specification
2.2.1 depm
Main supply (l1 l2 l3)
Supply frequency 48 - 62Hz
Supply voltage 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
15/ hr (Minimum 4m Interval)
Output ratings
Output Current 100% Drive Rated Power continuously
Overload Capacity 106% of rated power
Digital inputs
Programmable
digital inputs
2
Voltage level 0-24Vdc (user selectable npn or pnp)

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
12
Analog input
Programmable
Analog Inputs
2
Voltage Input Mode 0:10Vdc
Voltage Mode Max
Voltage
24Vdc
Voltage Mode Input
Resistance
10KΩ
Current Input Mode 4:20mA
Current Mode Max
Current
20mA
Current Mode Max
Voltage
24Vdc
Current Mode Input
Resistance
500Ω
Resolution 12-bit
Analog output
Analog output 1
Output Mode Current, 4:20mA (the total resistance
of the the load across this output shall be
500Ω)
Maximum Current 20mA
Resolution 12-bit
Digital output
Digital Output 2
Output Range 0-24Vdc (NPN)
Maximum Current 30mA
Relay output
Relay output 2(n.o. n.c. com)
Max terminal load 5A @ 30Vac
5A @ 250Vac
Externals
Enclosure ip55 or ip66
Vibration test iec 60068-2-6
Max relative
humidity
95% (Non-condensing)
Operating ambient
temperature
-10:45°c
Storage ambient -25°c:60°c
Min. ambient
temperature at full
operation
-10°c
Altitude 1000m without derating, de-rate 1%
per 100m above 1000m
Maximum Altitude 3000m
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
- electrical, thermal and
energy
en 60204-1 Safety of machinery - electrical emc
equipment of machines-part 1:
general rules
2.2.2 frame 71
Main supply (l1 l2 l3)
Supply frequency 48 - 62Hz
Supply voltage 1 × 200-240v± 10% ,
3 × 380-480v± 10%
Max. imbalance of
supply voltage
2% of rated supply
Switching on
supply voltage
30/ hr (Minimum 2 min Interval)
Output ratings
Output Current 100% Drive Rated Power continuously
Overload Capacity 106% of rated power
Digital inputs
Programmable
digital inputs
2
Voltage level 0-24Vdc (user selectable npn or pnp)
Analog input
Programmable
Analog Inputs
2
Voltage Input Mode 0:10Vdc
Voltage Mode Max
Voltage
24Vdc
Voltage Mode Input
Resistance
240KΩ
Current Input Mode 4:20mA
Current Mode Max
Current
20mA
Current Mode Max
Voltage
5Vdc
Current Mode Input
Resistance
180Ω
Resolution 12-bit

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
13
Analog output
Analog output 1
Output Mode Current, 4:20mA
Maximum Current 20mA
Current Mode Max
Voltage
24Vdc
Current Mode Load
Resistance
< 1kΩ
Resolution 12-bit
Digital output
Digital Output 2
Output Range 0-24Vdc (pnp)
Maximum Current 20mA
Relay output
Relay output 2(n.o. n.c. com)
Max terminal load 5A @ 30Vdc
5A @ 250Vac
Externals
Enclosure ip55 or ip66
Vibration test iec 60068-2-6
Max relative
humidity
95% (Non-condensing)
Operating ambient
temperature
-10:40°c
Storage ambient -25:60°c
Min. ambient
temperature at full
operation
-10°c
Altitude 1000m without derating, de-rate 1%
per 100m above 1000m
Maximum Altitude 3000m
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 - electrical, thermal and
energy
en 60204-1 Safety of machinery - electrical emc
equipment of machines-part 1:
general rules
ul 61800-5-1 Adjustable speed electrical power drive
systems - part 5-1: safety requirements
- electrical, thermal and energy
csa c22.2#274 Adjustable speed drives
2.2.3 depm 2
Main supply (l1 l2 l3)
Supply frequency 48 - 62Hz
Supply voltage 3 × 200-230v± 10%,
3 × 380-480v± 10%,
3 × 575-600v± 10%
Max. imbalance of
supply voltage
3% of rated supply
Switching on
supply voltage
120/ hr (Minimum 30s Interval)
Output ratings
Output Current 100% Drive Rated Power continuously
Overload Capacity 106% of rated power
Digital inputs
Programmable
digital inputs
2
Voltage level 0-24Vdc (npn)
Analog input
Programmable
Analog Inputs
2
Voltage Input Mode 0:10Vdc
Voltage Mode Max
Voltage
30Vdc
Current Input Mode 4:20mA
Current Mode Max
Current
20mA
Resolution 12-bit
Analog output
Analog output 1
Output Mode Current, 4:20mA
Maximum Current 20mA
Resolution 10-bit
Digital output
Digital Output 1
Output Range 0-24Vdc (pnp)
Maximum Current 20mA
Relay output
Relay output 2(1×n.o. and 1×c.o.)
Max terminal load 5A @ 30Vdc
5A @ 250Vac
Optional relay output 3×n.o.
Max terminal load 5A @ 30Vdc
6A @ 250Vac

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
14
Externals
Enclosure ip55 or ip66
Vibration test iec 60068-2-6
Max relative
humidity
95% (Non-condensing)
Operating ambient
temperature
-10:45°c
Storage ambient -40:60°c
Min. ambient
temperature at full
operation
-10°c
Altitude 1000m without derating, de-rate 1%
per 100m above 1000m
Maximum Altitude 4000m
Compliance with Standards
en 61800-5-1:
2007:a11:2021
Adjustable speed electrical power drive
systems. Safety requirements. Electrical,
thermal and energy.
en 61800-3:2018 Adjustable speed electrical power
drive systems. EMC requirements and
specific test methods.
en 60204-1:2018 Safety of machinery. Electrical
equipment of machines general
requirements. Uncontrolled stop
“Category 0”
ul 61800-5-1 Adjustable speed electrical power drive
systems - part 5-1: safety requirements -
electrical, thermal and energy
csa c22.2#274 Adjustable speed drives
2.3 electrical installation
2.3.1 power wiring
2.3.1.1 power wiring for frame 71 motors – 1 phase
Upper right corner of the motor. Use Access port #1 for power
wiring and ground.
2.3.1.2 power wiring for frame 71 motors – 3 phase
Upper right corner of the motor. Use Access port #1 for power
wiring and ground.

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
15
2.3.1.3 power wiring for depm motors
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
2.3.1.4 power wiring for depm 2 motors
Upper right corner of the motor. Use Access port #1 for power
wiring and ground.
2.3.2 tools you will need
2.3.3 the main cover disassembly
2.3.3.1 main cover disassembly – frame 71 motors
1
2
Access1
Access2
Ground
l3
Access1
Access2l2
l1
ground
l1
l2
l3
access1
for power
2.5 &
3 mm

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
16
3
4
2.3.3.2 the main cover disassembly- depm motors
1
2
3
4
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.
warning
Before removing 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.
a
b
2.5 mm
a
b
3 mm
power from
mcc

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
17
5
6
2.3.3.3 the main cover disassembly-depm2 motors
1
2
3
4
ethernet
cable
router
ethernet
cable
router
power from
mcc
power from
mcc

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
18
2.3.4 control terminal wiring
2.3.4.1 control terminal wiring for
frame 71 motors
fig 2.3.2.a Motor Control Board
2.3.4.2 control terminal wiring for depm motors
fig 2.3.2.b Motor Control Board
MODBUS CONNECTOR (J15)
Pin 1485-A
Pin 2485-B
Pin 3GND ISOLATED
RELAYS CONNECTOR (J12)
Pin 1Relay 1 NO
Pin 2Relay 1 COM
Pin 3Relay 1 NC
Pin 4Relay 2 NO
Pin 5Relay 2 COM
Pin 6Relay 2 NC
I/O CONNECTOR (J16-J18)
Pin 1+24 ISOLATED OUTPUT (200mA)
Pin 2GND ISOLATED
Pin 3+10V ISOLATED / Analog Output 4-20mA (+)
Pin 4Analog Output 4-20mA (-)
Pin 5Analog Output 0-10V
Pin 6GND ISOLATED
Pin 7+24 ISOLATED
Pin 8Digital Input 1
Pin 9Digital Input 2
Pin 10 Comm NPN / PNP (jumper)
Pin 11 GND ISOLATED
Pin 12 Digital Output 1 (open collector 20mA)
Pin 13 +24 ISOLATED
Pin 14 Digital Output 2 (open collector 20mA)
Pin 15 Analog Input 1, 4-20mA (+)
Pin 16 Analog Input 1, 0-10V
Pin 17 +10V ISOLATED
Pin 18 GND ISOLATED
Pin 19 Analog Input 2, 4-20mA (+)
Pin 20 Analog Input 2, 0-10V

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
19
2.3.4.3 control terminal wiring for depm2 motors
fig 2.3.2.c Motor Control Board
2.3.5 analog / digital inputs
2.3.5.1 analog / digital inputs for frame 71 motors
i wiring digital inputs for frame 71 motors
Recommended, internal npn is default factory setting
Optional, external power supply NPN
internal power supply npn
internal input impedance 10kOhm
common dig input 1-2
dig input 2
dig input 1
+24Vdc
gnd
j1
10
9
8
7
6
5
4
3
2
1
external power supply npn
internal input impedance 10kOhm
common dig input 1-2
dig input 2
dig input 1
+24Vdc
gnd
j1
10
9
8
7
6
5
4
3
2
1
0
V
+24V
MODBUS CONNECTOR (J15)
Pin 1485-A
Pin 2485-B
Pin 3GND ISOLATED
RELAYS CONNECTOR (J12)
Pin 1Relay 1 NO
Pin 2Relay 1 COM
Pin 3Relay 1 NC
Pin 4Relay 2 NO
Pin 5Relay 2 COM
Pin 6Relay 2 NC
I/O CONNECTOR (J16-J18)
Pin 1+24 ISOLATED OUTPUT (200mA)
Pin 2GND ISOLATED
Pin 3+10V ISOLATED / Analog Output 4-20mA (+)
Pin 4Analog Output 4-20mA (-)
Pin 5Analog Output 0-10V
Pin 6GND ISOLATED
Pin 7+24 ISOLATED
Pin 8Digital Input 1
Pin 9Digital Input 2
Pin 10 Comm NPN / PNP (jumper)
Pin 11 GND ISOLATED
Pin 12 Digital Output 1 (open collector 20mA)
Pin 13 +24 ISOLATED
Pin 14 Digital Output 2 (open collector 20mA)
Pin 15 Analog Input 1, 4-20mA (+)
Pin 16 Analog Input 1, 0-10V
Pin 17 +10V ISOLATED
Pin 18 GND ISOLATED
Pin 19 Analog Input 2, 4-20mA (+)
Pin 20 Analog Input 2, 0-10V
Digital
Input
Wiring
Analog
Input
Wiring
MODBUS CONNECTOR (2x RJ-45 - Female Ports, Interchangeable)
Pin 1 NOT USED
Pin 2 NOT USED
Pin 30VOLT
Pin 4 NOT USED
Pin 5 NOT USED
Pin 6+24 VOLT
Pin 7 RS 485- Modbus RTU
Pin 8 RS 485+ Modbus RTU
RELAYS CONNECTOR
RELAY EXPANSION CARD (Optional Accessory)
Pin 14 RL1 - COM Auxiliary Relay Output 1 Common
Auxiliary Relay Output 1 Normally Open
Auxiliary Relay Output 1 Normally Closed
Auxiliary Relay Output 2
Auxiliary Relay Output 2
Pin 15 RL1 - NO
Pin 16 RL1 - NC
Pin 17 RL2 - A
Pin 18 RL2 - B
I/O CONNECTOR
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
+24V DC 24 Volt DC Output (100mA)
DI 1 Digital Input 1: 8-30V DC = High (30V DC Max)
DI 2 Digital Input 2: 8-30V DC = High (30V DC Max)
Not Used
+10V DC +10 Volt DC Output (10mA)
AI 1Programmable Analog Input 1 (0-10V / 0-20mA)
0V / COM0Volt Common for AI/AO/DI/DO
AO Analog Output: 4 - 20mA (20mA Max.)
0V / COM0Volt Common for AI/AO/DI/DO
AI 2Programmable Analog Input 2 (0-10V / 0-20mA)
DO Digital Output: 24 Volt DC (20mA Max.) when Active.
STO+ STO + 24V DC Connection (Run Permit).
STO- STO 0 Volt Connection (Run Permit).
RL3 - A
RL3 - B
Auxiliary Relay Output 3
Auxiliary Relay Output 3
RL4 - AAuxiliary Relay Output 4
RL4 - BAuxiliary Relay Output 4
RL5 - AAuxiliary Relay Output 5
RL5 - BAuxiliary Relay Output 5

installation &
operating instructions
Design Envelope 4322 & 4372
Tango Pumping Unit
20
ii wiring analog inputs for frame 71 motors 2.3.5.2 analog / digital inputs for
depm motors
a 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 voltage
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.
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 remov-
ing 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
1 Connect signal source to anin1 Or anin2
2 Connect the other port to gnd
Digital
Input
Wiring
Analog
Input
Wiring
0-10V inputs
+10Vdc
0-10V input 1
gnd
j2
Max. 24
v
20
19
18
17
16
15
14
13
12
11
+10Vdc
0-
10V input 2
gnd
j2
20
19
18
17
16
15
14
13
12
11
Max. 24v
0-20mA inputs
2-Wires Sensor
2-Wires Sensor
+24Vdc
-
0-20mA input 1
gnd
j2
20
19
18
17
16
15
14
13
12
11
3-Wires Sensor
+24Vdc +
out
out
out
-
0-20mA input 1
gnd
j2
20
19
18
17
16
15
14
13
12
11
+24Vdc
-
0-20mA input 2
gnd
j2
20
19
18
17
16
15
14
13
12
11
3-Wires Sensor
+24Vdc +
-
0-20mA input 2
gnd
j2
20
19
18
17
16
15
14
13
12
11
out