d and reliable soft starter designed for use with standard three-phase,
three-wire and six-wire, squirrel cage induction motors. It provides the best method of reducing current and
torque during motor starting.
The RVS-DN starts the motor by supplying a slowly increasing voltage to the motor. This provides soft start
and smooth, stepless acceleration while drawing the minimum current necessary to start the motor.
The third generation, microprocessor based digital control provides unique features like pump control, slow
speed, electronic reversing and accurate motor protection. RVS-DN models can be supplied with options for
insulation protection, thermistor input & analog output, etc.
The optional RS 485 Communication with Modbus protocol or the optional Profibus protocol enables full
control (START, STOP, DUAL ADJUST, Command, etc.) and supervision.
Advantages at a Glance
Complete line 8-3000A, 220-1200V
Heavy duty, fully rated design
Robust construction
Motor & Starter Protection
Too many starts
Long start time (stall)
Shear-pin
Superior starting & stopping characteristics
Comprehensive motor protection package
User friendly
Line or Inside Delta connection
Rated ambient temperature: 50°C
Unique optional features including:
Motor insulation tester
RS 485 comm. Modbus / Profibus
Thermistor input / analog output
Starting & Stopping
Soft start & soft stop
Current limit
Pump control program
Torque and current control for optimized
starting & stopping process
Dual adjustments - two starting & stopping
characteristics
(1) – Different dimensions when ordered with UL/cUL/marine approvals.
Refer to section
5.3 page 47 for dimensions when ordered with these approvals.
(2) – Dimensions with preparation for bypass.
(3) – Must be operated with bypass contactor. Add space for current transformers and bus
bars for preparation for bypass.
(4) – Control module is installed separately. Refer to section
5.1.1 page 45 for dimensions.
(5) – Consult factory.
Refer to section
5 on page 34 for detailed dimensions.
3.3RVS-DN Selection
The RVS-DN should be selected in accordance with the criteria of motor current and starting conditions.
3.3.1 Motor Current and Starting Conditions
Select the RVS-DN acco
rding to motor's Full Load Ampere (FLA) - as indicated on its nameplate (even if the
motor will not be fully loaded).
The RVS-DN is designed to operate under the following maximum conditions:
Ambient
Temperature
[°C]
Starting Current
[A]
Acceleration
Time
[sec]
50 400%xIn 30
Max. starts per hour: 4 starts per hour at maximum ratings and up to 60 starts per hour at light load
applications (consult factory).
Note:
For very frequent starts (inching applications) the inching current should be considered as the Full Load
Current (FLC) (consult factory).
Thyristor’s PIV rating, internal circuitry and insulation
defines five voltage levels:
400V for 230-400V +10%/ -15% 50/60Hz
480V for 480V +10% /-15% 50/60Hz
600V for 600V +10% /-15% 50/60Hz
690V for 690V +10% /-15% 50/60Hz
1000V for 1000V +10% / -15% 50/60Hz
1200V for 1200V +10% / -15% 50/60Hz
Each RVS-DN is suitable for one of the above levels
& for 50/60 Hz.
L1b, L2b, L3b Preparation for bypass
connection (optional)
All models from RVS-DN 950A and up, RVS-DN
1000V and RVS-DN 1200V models must be
operated with a bypass contactor.
Bypass preparation is standard in models RVSDN85-170A.
U, V, W Connection to motor
Refer to section
3.5.1 page 14 for more details.
G Connection to ground For proper operation and for safety reasons soft
RVS-DN must be properly grounded.
Terminal 1 Control phase (positive – for DC
control)
The control voltage operates the electronic circuitry
and the fans (when they exist).
Terminal 3 Control neutral (return) Three control voltages are available:
115 for 115V +10%/ -15% 50/60Hz
230 for 230V +10%/ -15% 50/60Hz
110VDC for 110V +10%/ -15% DC
Terminal 2 Fan control An internal jumper, connected between the fan and
terminal 2 enables three modes of operation (refer to
section
6.6 page 58).
For fan power consumption, see technical
Terminal 4 Input – STOP command.
• Input from a N.C. contact
• To stop the motor, disconnect
Control Input voltage from
terminal 4 for at least 250mSec.
(no SOFT STOP)
Terminal 5 Input – SOFT STOP command.
• Input from a N.C. contact
• To SOFT STOP the motor
disconnect Control Input voltage
specification in section
• Control Input voltage (STOP, SOFT STOP,
START, terminal inputs 7 and 8) can be the same
as Control Supply (terminals 1, 3) or voltage from a
different source.
• The Control Inputs are opto-coupled and isolated
from the microprocessor circuitry.
Control Input voltages available:
230 for 90-230V +10%/ 50/60Hz or DC.
24 for 24V +10%/ -15% 50/60Hz or DC.
48 for 48V +10%/ -15% 50/60Hz or DC.
10 page 99.
from terminal 5 for at least
250mS
Note:
If SOFT STOP is not required,
connect a jumper between
terminals 4 and 5.
connect Control Input voltage to
terminal 4 for at least 250mSec.
Notes:
• Motor will start only if STOP
(terminal 4) and SOFT STOP
(terminal 5) terminals are
connected to Control Input
voltage.
• To reset a fault the START
command must be removed.
Terminal 7 Programmable input –
Refer to section 3.5.2 page 16.
ENERGY SAVE / SLOW
SPEED / RESET
Terminal 8 Programmable input –
Refer to section 3.5.3 page 16.
DUAL ADJUSTMENT /
REVERSING / RESET
Terminal 9 Common to terminals 4-8.
This terminal is a reference for terminals 4, 5, 6, 7 &
8.
Note:
When Control Supply and Control Input voltage are
from the same source, connect a jumper between
terminals 3 and 9.
Terminal 10 Programmable IMM/S.PIN
RELAY (N.O.)
IMM/S.PIN RELAY is the immediate/shear pin output
relay.
•
Terminal 11 Programmable IMM/S.PIN
RELAY (N.C.)
• Voltage free 8A, 250VAC, 2000VA max.
• Selection between functions is made from the
keypad or through the communication.
Terminal 12 Programmable IMM/S.PIN
RELAY (Common)
Terminal 13 Programmable Fault
Output relay (N.O.)
Terminal 14 Programmable Fault
Output relay (N.C.)
Terminal 15 Programmable Fault
Output relay (Common)
• Refer to section
7.7.8 page 83 for IMM/ S.PIN
RELAY programming.
• Refer to section
3.5.4 page 16 for more details.
Voltage free 8A, 250VAC, 2000VA max. changes its
position upon fault.
The contact is programmable to function as FAULT
or FAULT-FAIL SAFE.
When the FAULT function is selected, the relay is
energized upon fault. The contact returns to its
original position when one of the following occurs:
• The fault has been removed and RVS-DN was
reset
• Disconnection of Control Supply
When the FAULT-FAIL SAFE function is selected,
the relay is energized immediately when the Control
Supply is connected and de-energizes when one of
the following occurs:
Voltage free 8A, 250VAC, 2000VA max. changes its
position at the end of acceleration, after an
adjustable time delay (Contact Delay), 0 – 120 sec.
The contact returns to its original position when
ENERGY SAVE is operated, on SOFT STOP or
STOP signals, on FAULT condition, or upon voltage
outage.
Terminal 18 Programmable End of
Acceleration (Run) Output
relay (Common)
The End of Acceleration contact (Run) can be used
for:
• Closing a bypass contactor
• Activating a valve after compressor has reached full
speed
• Loading a conveyor after motor reached full speed.
Refer to section
7.7.3 page 72 for RUN CONTACT
DELAY programming
Terminal 19 External Fault input Input from a N.O. contact that is connected between
terminals 19 and 21. The RVS-DN will trip 2 seconds
after the contact closes.
Notes:
• Wires connecting the External Fault contact to
terminal 19 should not exceed 1 meter in length.
• External Fault can be used only when terminal 21 is
connected to neutral or ground.
• Do not use External Fault while using the Insulation
Alarm option.
• Only potential free contacts may be connected to
terminal 19.
• Do not connect any voltage to terminal 19.
• Any connection of voltage to this terminal may
disrupt RVS-DN operation, and cause RVS-DN or
motor damage.
• Refer to section
4.12 page 24 for the External Fault
wiring diagram.
Terminal 20 Tacho Feedback input (optional)
• Provides linear acceleration and deceleration.
• Requires high quality tacho generator on motor
shaft, output voltage 0-10VDC, linear
speed/voltage ratio.
• Consult factory for further information before using
the tacho feedback feature.
Terminal 21 Neutral connection When a mains neutral wire is available, connect
terminal 21 to neutral. Terminal 21 serves only as a
voltage reference to the control circuitry.
Notes:
• RVS-DN circuitry incorporates an internal artificial
neutral, which should only be used, when the
system is not grounded and mains neutral
connection is not available.
• Only potential free contacts may be connected to
terminal 21.
• Do not connect any voltage to terminal 21.
Any connection of voltage to this terminal may
disrupt RVS-DN operation, and cause RVS-DN or
motor damage.
• Standard RS485, half duplex with Modbus protocol,
baud rate 1200, 2400, 4800, 9600 BPS.
Terminal 23 RS-485 communication (-)
(optional)
• Twisted shielded pair should be used.
Connect shield to ground on the PLC/Computer
side.
Terminal 24 RS-485 communication (+)
(optional)
• Terminals 4 & 5 must be wired to Control Supply for
operation in communication mode (refer to section
4.16 page 27 for wiring diagram).
• Up 32 units can be connected for Modbus RS485
communication. For reliable communication, units
should be installed in the vicinity of 200m
maximum, from the first to the last unit.
• Refer to section
7.7.9 page 85 for programming.
• Consult the communication manual (ask factory).
Terminal 25 Programmable Insulation Alarm
Output relay (Common) (optional)
Terminal 26 Programmable Insulation Alarm
Output relay (N.O.) (optional)
Voltage free 8A, 250VAC, 2000VA max. is energized
when the motor insulation level decreases below the
Insulation Alarm level.
The relay is de-energized and the alarm will
disappear if on of the following occurs:
• The insulation level returns to normal for more than
60 seconds
• RVS-DN resets
• Control Supply disconnection
Terminal 27 Programmable Insulation
Alarm Output relay (N.C.)
(optional)
Refer to section
Notes:
• Do not use External Fault while using Insulation test
option.
• Insulation test can be performed only when main
7.7.7 on page 81 for more details.
voltage is not connected to the RVS-DN,
(upstream isolation device must be opened.)
• For correct operation of Insulation test, it is
important that the RVS-DN is properly grounded
and that the control module is properly fastened to
the power section.
• Insulation test option and analog output option can
not be applied together.
• Refer to section
7.7.7 page 81 for insulation test
programming.
Terminal 28 Thermistor input (T1) (optional) Thermistor input is programmable as a PTC or NTC
type thermistor. The trip value is adjustable between
1-10Kohm, preset delay of 2 Sec.
Terminal 29 Thermistor input (T2) (optional) Connect thermistor and/or Analog output shield to
ground terminal.
Terminal 30 Ground (optional) Analog output (0-10VDC or 0-20mA or 4-20mA)
Terminal 31 Analog output (-) (optional) reflects motor current and is related to 2xFLA. i.e.,
Full scale (10VDC or 20mA) is related to 2xFLA.
Terminal 32 Analog output (+) (optional) Note:
In the RVS-DN 1000V & 1200V models the analog
output reflects motor current and is related to
2xFLC.Dip switches allow selection between: 010VDC, 0-20mA or 4-20mA.
conditions the heat dissipated by an RVS-DN causes heating of the enclosure and
energy losses. The heating and losses can be eliminated by the use of a bypass contactor, which bypasses
the RVS-DN after completion of start-up so that motor current will flow through the bypass contactor.
In models RVS-DN 950A and up, current transformers CT1 and CT2 are mounted outside the RVS-DN and
need to be connected to the RVS-DN by the customer. In this case the customer MUST NOT ground the secondaries of current transformers!
Heat dissipation from the RVS-DN is calculated as:
Ploss=3x1.3xI+FAN loss
where:
I represents motor current. Note that the motor current during the start process is higher than the motor rated
current.
FAN loss represents power loss caused by all internal fans (refer to section
10 page 99 for fan loss per
model).
For example, during start of a 820A motor when CURRENT LIMIT is set to 400%, heat dissipation can be
calculated as:
Ploss=3x1.3x4x820+150=12,792Watt≈12.8kW
While a 820A motor is running and the motor current is 820A, heat dissipation can be calculated as:
Ploss=3x1.3x820+150=3,198Watt≈3.2kW
When a bypass contactor is used this changes the previous calculation to:
Ploss=3x1.3x0+150=150Watt≈0.15kW
It is obvious that using a bypass contactor can significantly reduce energy consumption.
Notes:
• All models from RVS-DN 950A and up, RVS-DN 1000V and RVS-DN 1200V must be implemented with a
bypass contactor (see section
3.5.1.2 page 15).
• Bypass preparation is standard in models RVS-DN 85-170A.
3.5.1.1 Maintaining Current Protection after Bypass Closes
Current flow during RUN when the bypass contactor bypasses the RSV-DN.
Current transformers CT1 and CT2 are able to measure motor current, thus the motor current
protections of the RVS-DN are operable.
Note:
If the RVS-DN is bypassed without using the preparation for bypass the following protections are not
during RUN:
• UNDER CURRENT
• O/C SHEAR PIN
• OVERLOAD TRIP
3.5.1.2 Maintaining Current Protection after Bypass Closes - RVS-DN 950-3000a
operable
RVS-DN 950-3000A models are supplied without preparation for bypass. However bypass must be applied for these models.
Current transformers CT1 and CT2 are supplied separately and must be connected to the RVS-DN as shown
below.
Note:
Do not ground current transformers secondaries!
Current flow during RUN when the bypass contactor bypasses the RVS-DN. The customer
must perform the bypass connections shown.
Current transformers CT1 and CT2 are supplied with the RVS-DN. Do NOT ground the CTs!
3.5.2 Input Terminal 7 - Energy Save/Slow Speed/Reset
Input from a N.O. contact - selection between above functions is made from the keypad (refer to section
7.7.8 page 83) or through the communication (Modbus or Profibus).
When ENERGY SAVE
function is selected - connect terminal 7 to control input voltage by a jumper for
automatic operation, upon load decrease.
When connected through a N.O. contact, closing the contact operates Energy Save.
When SLOW SPEED
function is selected - connect control input voltage to terminal 7 before starting. When
start command is initiated motor will run at 1/6 nominal speed for 30 seconds maximum. Closing terminal 7
while motor is running will not have any effect.
When RESET
function is selected - connect terminal 7 to control input voltage (use a N.O. momentary
Input from a N.O. contact - selection between above functions is made
7.7.8 page 83) or through the communication (Modbus or Profibus).
from the keypad (refer to section
When DUAL ADJUSTMENT
function is selected - connect terminal 8 to Control Input voltage to operate the
RVS-DN with the DUAL ADJUSTMENT characteristic. DUAL ADJUSTMENT characteristic is programmed as
explained in section
7.7.5 page 79. You can switch between the primary and DUAL ADJUSTMENT settings
before and/or during starting.
When dip switch #3 is set to on, DUAL ADJUSTMENT operates as D.ADJ.:GENERATOR PARAMETERS.
Use this mode if the normal starting process fails, i.e., SHORTED SCR or WRONG CONNECTION faults
occur and, after testing, operator is sure that SCRs, motor and motor connections are not faulty.
Refer to section
Refer to section
4.17 page 29 for D.ADJ.:GENERATOR PARAMETERS wiring. 9 page 95 for trouble shooting.
When SLOW SPEED REVERSE
function is selected - connect Control Input voltage to terminal 8 to reverse
direction. In order to operate in SLOW SPEED REVERSE, terminal 7 must be programmed as SLOW SPEED
and Control Input voltage must be connected to terminal 7 as well.
You can give the reverse command before the motor is started or during operation at SLOW SPEED.
Connecting Control Input voltage to terminal 8 before motor is started, starts the motor in reverse direction.
Connecting Control Input voltage while motor is running at SLOW SPEED stops the motor for 0.6 – 2 sec
(according to motor size) before reversing its direction.
Refer to section
4.10 page 23 for wiring diagram.
When RESET
function is selected - connect terminal 8 to Control Input voltage (use a N.O. momentary
0 No options
3M Communication - RS-485 (Modbus)
3P Communication - Profibus
4 Insulation tester
(4) (5)
(3)
(Must be factory supplied).
5 Analog card – Thermistor in and Analog out
8 Harsh environment treatment. (Must be factory supplied).
9 Preparation for Bypass contactor
(1) (2)
(3) (5)
(4) (5)
B Line and load bus bars at bottom (Applicable in Marine/UL models 210-820A)
D Remote panel mounting replacing the original panel.( supplied with 1.5 m cable)
H Special character set LCD display
M Marine approval (consult factory)
U UL & cUL approval (8-820A models only and up to 600V)
T Tachometer card for special drive systems (consult factory)
(4) (5)
ROC Chinese display
Front Panel
Specify Description
S Standard
RU Russian front panel and Russian characters LCD display.
Notes:
(1) RVS-DN 950-3000A, RVS-DN 1000V and RVS-DN 1200V must be operated with a bypass contactor. For
usage without bypass contactor consult the factory.
(2) Preparation for bypass contactor is standard in RVS-DN 85-170A.
(3) Only one option, either 3M or 3P may be installed in one RVS-DN.
(4) Only one option, either 4 or 5 or T may be installed in one RVS-DN.
(5) All options must be factory installed in RVS-DN 8-72A.
(6) Current transformers (CTs) for RVS-DN950A and up are designed to allow installation within 1.5m from
the RVS-DN (use the CTs for the RVS-DN only!)
(7) If you need more than one option, make sure to indicate it with a plus sign (+), for example 8+9 for Harsh
environment and preparation for bypass contactor.
Ordering Example:
RVS-DN rated 820A, mains voltage - 230V, Control Supply voltage - 115V, Control Input
- 115V Modbus communication card, Analog card, Harsh environment treatment, preparation for bypass and
standard front panel:
Only potential free contacts may be connected to terminal 21!
Do not connect any voltage to terminal 21!
Any connection of voltage to terminal 21 may disrupt RVS-DN operation, and
cause damage to the RVS-DN or the motor!
4.2Control Supply, Control Input and Mains are From the Same Source, Neutral Connected to
Terminal 21
Notes:
• Use this diagram when Control
Supply, Control Input and mains are
all from the same source, and
terminal 21 is connected to neutral
as per section
4.1 page 19.
• Supply must be protected for short
circuit and over load. 6A fuse is
recommended.
• It is recommended to use a separate
fuse for the auxiliary circuits.
4.3Control Supply and Control Input From the Same Source, Neutral not Connected to
Terminal 21
Notes:
• Use this diagram when mains and
control voltage are not from the
same source
or
when mains and control voltage are
from the same source, but terminal
21 is not connected to neutral as
per section
ENERGY SAVE/SLOW SPEED/
RESET, as programmed in I/O
PROGRAMMING PARAMETERS.
Refer to section
7.7.8 page 83.
• ENERGY SAVE or SLOW SPEED
functions require a maintained
contact to operate.
• RESET function requires a
momentary contact to operate
• Drawing shows Control Supply and
Control Input from the same source.
Refer to section
4.6 for Control
Supply and Control Input from
separate sources.
4.11Slow Speed and Slow Speed Reverse
For Slow speed operation:
•
o Program Input terminal 7 as
SLOW SPEED. Refer to
section
7.7.8 page 83.
o Connect Control Input voltage
to terminal 7 and start the soft
starter. Motor will run at
SLOW SPEED.
• For Slow speed reverse operation:
o Program Input terminal 7 as
SLOW SPEED. Refer to
section
7.7.8 page 83.
o Program Input terminal 8 as
SLOW SPEED REVERSE.
Refer to section
7.7.8 page
83.
o
Connect Control Input voltage
to terminal 7 and start the soft
starter. Motor will run at
SLOW SPEED. When Control
Input voltage is connected to
terminal 8 motor will stop and
SLOW SPEED REVERSE.
o If Control Input voltage is
connected to terminal 8
before start command, motor
will run at SLOW SPEED
REVERSE when the start
command is initiated.
• Drawing shows Control Supply and
Control Input from the same source.
Refer to section
Switch E can be used as an
EXTERNAL FAULT input only when
terminal 21 is connected to neutral or
ground and INSULATION TEST
option is not installed.
4.13 Line Contactor
Notes:
• Typical wiring when RVS-DN is retrofitted into an existing system to reduce modifications in
existing installations.
• Start signal is switched on upon closure of the line contactor. The RVS-DN will operate as long
as the line contactor is energized.
• Control Supply obtained from mains must match the RVS-DN Control Supply voltage.
• It is recommended that terminals 1-3 are always connected to Control Supply voltage.
• Soft stop can not be applied for this wiring diagram. If soft stop is required, the line contactor can
be held by the immediate relay contacts because the relay is de-energized only at the end of the
soft stop.
• Verify that N.O. contact C1 closes after the main contactor closes. RVS-DN requires 500 mSec.
delay for the start signal after the line contactor is closed. If it closes prior to that, UNDER
VOLTAGE fault will occur. It is recommended to use a time delay timer to prevent possible
faults.
• In order to operate via communication, either Modbus or Profibus optional PCBs must be installed
and wired properly.
• RVS-DN must be properly grounded.
• RVS-DN must be programmed to enable control (not only monitoring). Refer to section
7.7.10 page 85 for programming.
7.7.9 and
• Make sure that after programming, Control Supply voltage is disconnected and reconnected so
that the communication settings will take affect.
• RVS-DN will toggle between communication commands and local commands UNLESS
switches
A or B are opened.
o Switch A and B each overrides a START command coming from the communication
channel.
o Switch A can be used as an immediate stop that prevents an unwanted remote start
coming from communication.
o Switch C can be used as a local SOFT START.
o Switch B can be used as a local SOFT STOP.
WARNING!
Beware!
RVS-DN must be grounded at all times.
When testing the RVS-DN control/communication it is possible to use the control
module only without the power section (RVS-DN 85A and up).
The control module MUST be properly grounded to avoid danger of
electrical shock!!
• When starting from a diesel generator make sure that its size is suitable.
Based on experience, the power (kW) of a diesel generator should usually exceed at least 1.8
times the power (kW) of the motor in order to enable consistent motor starts, consult the factory if
necessary. However this should be checked on a case by case basis.
• When starting from a diesel generator, its voltage regulator (especially older type regulators) may
be affected during the starting process, thus causing rapid voltage fluctuations (~350V to ~500V in
400V systems). In these rare cases, the voltage regulator must be upgraded – consult your diesel
generator supplier.
• When operating from mains and alternatively from a diesel generator, set normal starting
characteristics for mains and suitable parameters for the diesel generator in the DUAL
ADJUSTMENT setting. When starting from mains, the primary settings (suitable for main starting)
will be operative. Upon starting from a diesel generator, close the contact between the Control
Supply and terminal 8 to operate in D.ADJ.:GENERATOR PARAMETERS mode.
• To operate D.ADJ.:GENERATOR PARAMETERS mode:
o Set dip switch # 3 and dip switch #1 to on - refer to sections
6.5.1 page 56 & 6.5.3, page 57.
o Insert a contact (or jumper) between Control Supply and input terminal 8 (DUAL ADJUST)
and close contact to operate the D.ADJ.:GENERATOR PARAMETERS. Dual Adjust LED
will light.
o Set the DUAL ADJUST parameters to the values necessary for the application (e.g., shorter
ACCELERATION TIME, lower CURRENT LIMIT, etc.). Refer to section
7.7.5 page 79 for
parameters settings.
Note
:
The D.ADJ.:GENERATOR PARAMETERS must not always be used when a diesel generator is
supplying the RVS-DN. Only use D.ADJ.:GENERATOR PARAMETERS when the normal starting
process fails, i.e. SHORTED SCR or WRONG CONNECTION faults occur, and only after you have
tested and are sure that the SCRs, motor and motor connections are not faulty.
WARNINGS!
When operating in D.ADJ.:GENERATOR PARAMETERS, the motor must be
loaded to avoid vibration during starting and stopping.
It is recommended to disconnect the power factor capacitors when operating
with a diesel generator.
”, use fuses for semiconductor protection to protect the RVS-DN from a short circuit.
Fuses for semiconductor protection give excellent results because they have low I²t values and high
interruption ratings.
Recommended fuse selection procedure:
(1) Fuse rated voltage
: Choose minimum fuse rated voltage which is above the rated voltage of the
mains.
(2) Fuse rated current:
Select a fuse which is able to carry 8 times the rated RVS-DN current for 30
seconds (this is double the maximum RVS-DN current for the maximum acceleration time).
(3) Fuse I²t:
Verify that the I²t value of the fuse is less than or equal to the I²t value of the thyristor in the
390 3 x 185 + 95 N2XY M12 60
460 3 x 240 + 120 N2XY M12 60
580 2 x (3x 150 + 70)N2XY M12 60
820 3 x (3x 185+ 95) N2XY M12 60
950 3 x (3x 240 + 120) N2XY M12 60
1100 4 x (3x 240 + 120) N2XY M12 60
1400 5 x (3x 240 + 120) N2XY M12 60
1800 8 x (3x 240 + 120) N2XY M12 60
2500 8 x (3x 300 + 150) N2XY M16 120
4.21LR Recommendations for Marine, Off-shore or Industrial Use
System design needs to
take into account the power supply source and the motor drive together with the
electronic soft starter.
Particular features to be considered are torque production, harmonic production and their consequential
effects and EMC. These points are relevant for marine, off-shore or industrial use.
4.22 Inside Delta Mode
1 General Information
4.22.
When the RVS-DN is installed Inside Delta, the individual phases of the RVS-DN are connected in series with
the individual motor windings (6 conductor connections as with the star-delta starter). The RVS-DN must only
conduct about 58 % (=1\√3) of the rated motor current. This allows the use of a significantly smaller RVS-DN.
Note that although when connected Inside Delta the current is reduced by 1.73 (√3), you should
choose an RVS-DN as if current is reduced only by 1.5. (1/1.5=0.667=67%)
For example:
For a motor with a rated current of 870A motor, a 950A starter will be selected to operate In-Line.
For Inside Delta RVS-DN, we calculate (870 x 67% = 580A) and select a 580A starter.
• Wrong motor connection might cause serious damage to the motor windings.
• When installing the RVS-DN Inside Delta it is highly recommended to use a contactor in series
to the RVS-DN or upstream (after motor protection) in order to avoid a damage to the motor if
the RVS-DN short circuits.
• The sinusoidal shape of the current might be imperfect. As a result, higher harmonic content is
incurred (THD), which may be twice the THD value as in the standard In-Line connection.
• Motor heat may increase (due to the higher THD).
• Phase sequence to the input of the RVS-DN (L1, L2 & L3 terminals) must be correct.
Otherwise, PHASE SEQUENCE fault will trip the RVS-DN immediately.
• Higher torque can not be obtained.
• The following factory preset features and functions are not active when Inside Delta mode is
configured:
o PULSE START
o Curve selection (CURVE 0 !! only).
o EN. SAVE and SL. SPD (energy save and slow speed)
o PHASE SEQUENCE in off mode
• When using INSIDE DELTA configuration, current wave shape is different than that in LINE
configuration. This difference casus the current RMS value of the INSIDE DELTA configuration
to be lower than that of LINE configuration assuming both have the same amplitude.
In order to best protect the SCRs in the INSIDE DELTA we do not allow the amplitude of the
current to be higher than that in LINE connection. Therefore the current RMS value expected
for the same setting of the CURRENT LIMIT is lower by 10 ~ 30% than that in LINE connection
Note :
For a high starting torque process, it is recommended to use the RVS-DN in the In Line connection.
4.22.3 Motor Connection and Terminals
INSIDE
DELTA
WARNINGS!
Beware!
Wrong connection of the RVS-DN or the motor may seriously damage the motor.
When using Inside Delta connection:
• It is highly recommended to use a line contactor in order to avoid possible
damage of the motor if the SCR is short circuited in the RVS-DN.
• If the RVS-DN is connected Inside the Delta, motor terminals are “live” (full
voltage) even when the contactor is open.
.
Motor connection in Delta with no RVS-DN.
Note:
Motor terminals are marked as follows:
ASA (USA) BS VDE IEC
T1 - T4 A1-A2 U - X U1 - U2
T2 - T5 B1-B2 V - Y V1 - V2
T3 - T6 C1-C2 W - Z W1 - W2
4.22.4RVS-DN Connected Inside Delta w/Bypass Contactor and Inside Delta Contactor
RVS-DN connection Inside Delta with bypass contactor to the RVS-DN and Inside Delta
contactor.
C1 is a bypass contactor.
C2 is an Inside Delta contactor.
U1-U2, V1-V2, W1-W2 are motor windings.
L1-U, L2-V, L3-W are RVS-DN controlled phases.
L1b, L2b, L3b are preparation for bypass to maintain current protection when the RVS-DN is
bypassed.
IMPORTANT! If speed reversing is required, L1, L2 and L3 on the input of the RVS-DN can not
be
switched!
This is because PHASE SEQUENCE OFF can not be implemented when RVS-DN is connected Inside
Delta. Thus, in order to reverse motor rotation two motor windings need to be switched as shown in the
following diagram:
(Winding V1-V2 is switched with winding U1-U2):
Reverse speed with RVS-DN connection Inside Delta with bypass contactor to the RVS-
DN and Inside Delta contactor.
C1 is a bypass contactor.
C2 is an Inside Delta contactor.
U1-U2, V1-V2, W1-W2 are motor windings.
L1-U, L2-V, L3-W are RVS-DN controlled phases.
L1b, L2b, L3b are preparation for bypass to maintain current protection when the RVS-DN is
bypassed.
Check that t
RVS-DN, and that the mains and control voltages are as indicated on the side and/or front label of the RVSDN.
RVS-DN label - example
6.2Mounting
he Full Load Ampere (FLA) of the motor is lower than or equal to the Full Load Current (FLC) the
Do not interchange line and load connections
When mains voltage is connected to the RVS-DN, even if control voltage is disconnected, full voltage may appear on the RVS-DN’s load terminals.
Therefore if isolation is required you must connect an isolation device between
the mains and the RVS-DN.
Power factor correction capacitors must not be installed on the load side of the
RVS-DN. When required, install capacitors on the line side of the RVS-DN.
Make sure RVS-DN FLC ≥ motor FLA!
Make sure mains voltage is correct!
Make sure control voltage is correct!
The RVS-DN must be mounted vertically. Allow
DN. To improve heat dissipation, it is recommended that you mount the RVS-DN directly on the rear metal
plate.
Notes:
(1) Do not mount the RVS-DN near heat sources.
(2) Surrounding air temperature in the cabinet should not exceed 50°C
(3) Protect the RVS-DN from dust and corrosive atmospheres.
(4) For harsh environments (sewage treatment plants, etc.) you should order the RVS-DN with the optional
harsh environment treatment (refer to ordering information page 18).
6.3Temperature Range & Heat Dissipation
The RVS-DN is rated to
Relative non-condensed humidity inside the enclosure must not exceed 95%.
Heat dissipation from the RVS-DN is calculated as:
where:
I represents motor current. Note that the motor current during the start process is higher than the motor rated
current.
FAN loss represents power loss caused by all internal fans (refer to section
model).
For example
calculated as:
While a 820A motor is running and the motor current is 820A, heat dissipation can be calculated as:
, during start of a 820A motor when CURRENT LIMIT is set to 400%, heat dissipation can be
operate within a temperature range of -10°C (14°F) to + 50°C (122°F).
Operating the RVS-DN with a surrounding air temperature that is higher than
50ºC will cause derating.
Operating the RVS-DN with a surrounding air temperature that is higher than
60ºC may cause damage to the RVS-DN.
Ploss=3x1.3x4x820+150=12,792Watt≈12.8kW
Ploss=3x1.3x820+150=3,198Watt≈3.2kW
sufficient space for suitable airflow above and below the RVS-
Ploss=3x1.3xI+FAN loss
10 page 99 for fan loss per
–
When a bypass contactor is used this changes the previous calculation to:
Ploss=3x1.3x0+150=150Watt≈0.15kW
It is obvious that using a bypass contactor can significantly reduce energy consumption.
You can reduce the amount of heat in an internal enclosure by:
a. Using additional ventilation
b. Using a bypass contactor
Important Note
: If the motor is started frequently, the cabinet should be designed for greater heat dissipation.
You can reduce the enclosure heating by adding ventilation.
6.3.1 Forced Ventilation
55 • Installation
Use the follo
wing arrangement for forced ventilation of the RVS-DN’s enclosure:
Non-ventilated
RVS-DN
General purpose
enclosure
RVS-DN
Fan at air outlet
ventilates
enclosure
Fan circulates
existing air.
Fan
6.3.2 Calculating the Enclosure Size, for Non-Ventilated Metal Enclosure
Area [m
where:
Area [m
2
] =
0.12 x Total heat dissipation [Watts]
60
External ambient temperature [ºC]
2
] represents the surface area that can dissipate heat (front, sides, top).
Total heat dissipation [Watt] represents the total heat dissipation of the RVS-DN and other control devices
in the enclosure. If the RVS-DN is started frequently you should use average power.
Remove top cover of the control module to access the main
PCB, optional PCBs and fan control jumpers.
RVS-DN 85-3000A
56 • Installation
RVS-DN main PCB.
Dip switch location, software version label location and PCB hardware version identification.
6.5Dip Switch Settings on the Main PCB
The dip swit
ch has eight separate switches. It is located under the front cover of the control module (in sizes
B-F) or under the display unit (in size A).
No. Switch Function Switch Off Switch On
Display format Minimized Maximized
1
Tacho feedback Disabled Enabled
2
Mains/generator Mains Generator
3
Must be off
4
LCD language selection See tables below section
5
6
Expanded settings Disabled Enabled
7
Software lock Open Locked
8
- -
6.5.4 page 57.
6.5.1 Switch # 1 – Display Modes
Two display modes are available:
Maximized – display of
all possible parameters.
Minimized – display of pre-selected parameters.
Setting switch # 1 to off will minimize the LCD displays.
Refer also to section
7.6 page 65.
Maximized Mode - Switch #1 – On Minimized Mode Switch #1 – Off
Display only
Main parameters
Start parameters
Stop parameters
Dual adjustment
Display only
Main parameters
Start parameters
Stop parameters
Statistical data
Energy save & slow speed parameters
Fault parameters
I/O programming
Communication parameters
Statistical data
-80%
CURRENT LIMIT 100-400% 100-500%
ACCELERATION TIME 1-30 seconds 1-90 seconds
DECELERATION TIME 1-30 seconds 1-90 seconds
MAX. START TIME 1-30 seconds 1-250 seconds
PHASE LOSS Y/N Yes
(2)
Yes/No
(2)
MAX SLOW SP TIME 1-30 seconds 1-250 seconds
O/C or WRONG CON protection
in Inside Delta mode.
Protection active in normal
set
(3)
OVERLOAD TRIP protection. OVERLOAD TRIP will be
active after Run LED is Lit.
(Motor is at full voltage)
(4)
Protection active in high set
OVERLOAD TRIP will be active
after MAX. START TIME has
elapsed.
(4)
(3)
Notes:
(1) Setting the INITIAL VOLTAGE to lower than 10% is not practical for loaded motors.
(2) Refer to section
(3) Refer to section
9 page 95. See PHASE LOSS protection and refer to the warning below. 9 page 95. See O/C or WRONG CON protection.
(4) In order to avoid OVERLOAD TRIP in special cases (very high inertia loads), where at the end of the
acceleration process, although motor is at full voltage (Run LED is Lit) and the current does not reduce to
nominal, set Dip switch #7 to On causing the OVERLOAD TRIP to be active only after MAX. START TIME has
elapsed.
WARNING!
Operator’s
responsibility!
(1) EXPANDED SETTINGS are for use in very special applications only!
Do not set to switch #7 to on unless RVS-DN is significantly larger than the
motor! When using expanded settings for the RVS-DN you must be extremely
careful to avoid damaging the motor or RVS-DN.
(2) Only cancel PHASE LOSS protection when the operator is sure that no real
phase loss exists and PHASE LOSS protection is activated.
This situation can occur in rare cases when there is no real fault but the RVSDN recognizes unusual behaviour like when THDV (Total Harmonic Distortion in
Voltage) in the network is high.
If this is a true case of PHASE LOSS then after cancelling PHASE LOSS
protection the motor will single phase and most likely be tripped by the over load
protection mechanism.
6.5.6 Switch # 8 – Software Lock
The software lock preve
nts undesired parameter modifications.
When locked, pressing the Store, ▼or ▲ keys causes the LCD to display UNAUTHORIZED ACCESS.
6.6Internal Fan Control
An internal jumper connected between the fan a
power consumption, see technical specification section
nd terminal 2, enables three modes of operation. For fan
Continuous mode (factory default) – Fan operates as long as the control supply is connected to terminals 1-
3. Leave the internal jumper connected to the left terminal of JI (marked A in the drawing).
External control mode – Fan operates when the control supply is connected to terminal 2. Connect the
internal jumper to the middle terminal of JI terminal (marked B in the drawing). For use without bypass,
connect the fans before giving the start command and disconnect at least 5 minutes after giving the stop or
soft stop command.
Automatic mode – Whenever the start or stop signals is given the fan operates for approximately 5 minutes.
Connect the internal jumper to the right terminal of JI (marked C in the drawing).
WARNING!
Automatic mode may be used only if bypass contactor is directly controlled by
the RVS-DN’s END OF ACCELERATION contact.
6.7Analog I/O (Option 5) (Terminals T1, T2, Gnd, Out (-), Out (+))
The analog
option incorporates
two functions:
• Thermistor input
• Analog output
Thermistor Input (Terminals T1, T2)
Analog P.C.B. layout
Programmable as PTC or NTC type thermistor. Trip value is adjustable between 1-10K, preset delay of 2 sec.
For thermistor input programming refer to section
7.7.7 on page 81.
Ground Terminal (terminal Gnd)
Connect the thermistor and/or the analog output shield to this ground terminal.
Analog Output (Terminals Out (+), Out (-))
Dip switches allow selection between: 0-10VDC, 0-20mA, 4-20mA
The analog value is related to I, 0….200% of FLA
In RVS-DN 1000V and RVS-DN 1200V models the analog value is related to I, 0….200% of FLC
1000V and RVS-DN 1200V models inverse programming is optional as well (refer to section
(1) It is important that the RVS-DN is properly grounded and that the control module is tightly fastened to the
power module.
(2) Use twisted shielded cable for the thermistor connection.
6.8Remote Key-Pad Installation
Remote key pad, connection cable and control module.
Cable length is 1.5 meters (consult with the factory if a longer cable is required).
Add 20 mm to depth dimension when optional remote key-pad (option D) is installed.
Remote key pad, mechanical installation and cut-out dimensions.
The control keypad is the link between the RVS-DN and the user.
The RVS-DN control keypad features:
(1) Two lines of 16 alphanumeric characters each with selectable languages – English, French,
German, and Spanish. Russian characters are optional and must be pre-ordered.
(2) Six push-buttons (Mode, Reset, Select, Store, Up (▲) and down (▼) keys).
(3) Eight indication LEDs (On, Start, Run, S.Stop, Stop, E.Save/Slow, D.Adj./Rev., Fault)
61 • Control Keypad
(1)
(2)
(3)
RVS-DN control keypad
7.1LCD Arrangement
CURRENT LIMIT
390%
Upper line displays function.
Lower line displays setting and\or measured values.
7.2Push-Buttons
gh the display and programming menus of the RVS-DN.
Mode
Scrolls throu
Note: Pressing Mode continuously increases the speed at which the parameters change.
When a mode name is displayed, pressing this button drills down to the parameters for that
Select
mode. When a parameter is displayed, pressing this button scrolls to the next parameter.
Allows the operator to increment adjusted values shown in the display. Operator should press
▲
this button once to increment one value, or continuously to rapidly increment values up to the
maximum value.
Allows the operator to decrement adjusted values shown in the display. Operator should press
▼
this button once to decrement one value, or continuously to rapidly decrement values up to the
minimum value.
when you have scrolled through all parameters and STORE
Store
Reset
Stores modified parameters only
ENABLE XXXXXX PARAMETERS is displayed. After you store a parameter successfully DATA
SAVED OK will display.
Note: P
essing this button at any other time has no effect.
Resets the RVS-DN after a fault has been dealt with and the start command has been removed.
This cancels the fault displayed and allows you to restart the motor.
the control supply voltage is connected to the RVS-DN.
Lights during soft start, indicating that motor supply voltage is ramping up.
Green
Yellow
Run
S.Stop
Lights after completion of the starting process, indicating that motor is at full
voltage. This LED flashes during slow speed operation.
Lights during soft stop, indicating that the motor supply voltage is ramping
down.
Red
Yellow
Green
Red
Stop
E.Save/Slow
D.Adj./Rev
Fault
Lights when the motor is stopped.
Lights when ENERGY SAVE is in operation.
Flashes when the motor is running in SLOW SPEED.
Lights when DUAL ADJUSTMENT is in operation.
Flashes when motor is running in SLOW SPEED REVERSE.
Lights upon operation of any of the built-in protections.
Flashes when the INSULATION ALARM optional relay is activated.
7.4Reviewing and Modifying Parameters
Press the Mode key several times until you reach the requir
ed mode page.
Press the Select key to review parameters for this mode.
Once you reach the required parameter, use the ▼ or ▲ keys to modify its value.
To store the new parameters, press the Select key until the STORE ENABLE message displays and then
press the Store key. The DATA SAVED OK message will display for 2 seconds.
7.5Special Actions Performed in TEST/MAINTENANCE Mode
Note:
For RVS-DN 1000V and RVS-DN 1200V refer to section
7.5.1 Run Self Test
Press the Mode and ▼ keys simultaneously.
The LCD will display:
TEST/MAINTENANCE
***OPTIONS***
Press the Select key.
The LCD will display:
RUN SELF TEST?
PUSH UP ARROW
Press the ▲ key.
The LCD will display:
Press the Mode and ▼ keys simultaneously.
The LCD will display:
TEST/MAINTENANCE
***OPTIONS***
Press the Select key twice.
The LCD will display:
BTL-R-16/09/2008
STRT.DN-270109
Press the Mode and ▼ keys simultaneously to exit the TEST/MAINTENANCE mode.
The LCD will display:
% OF MOTOR FLA
7.5.3 Obtain Default Parameters
Press the Mode and ▼ keys simultaneously.
The LCD will display:
TEST/MAINTENANCE
***OPTIONS***
Press the Select key three times.
The LCD will display:
STORE ENABLE
DEFAULT PARAMET.
Press the Store + Mode keys simultaneously.
The LCD will display:
DATA SAVED OK
And after a few seconds the LCD will display:
% OF MOTOR FLA
CAUTION!
Obtaining DEFAULT PARAMETERS erases all previously modified settings
and requires the operator to reprogram all parameters that differ from the
factory default.
Note: It is especially important to reprogram the FLC (as shown on the label of
the RVS-DN), FLA and voltage protection values again.
63 • Control Keypad
7.5.4 Reset Statistical Data
Press the Mode and ▼ keys simultaneously.
The LCD will display:
TEST/MAINTENANCE
***OPTIONS***
Press the Select key four times.
The LCD will display:
RESET STATISTICS
Press the Reset + Store keys simultaneously.
The LCD will display:
7.5.5 Calibrate Voltage and Current (Factory Use Only!)
Press the Mode and ▼ keys simultaneously.
the LCD will display:
TEST/MAINTENANCE
***OPTIONS***.
Press the Select key five times.
The LCD will display:
VOLTAGE ADJUST.
X VOLT
Press the Select key.
The LCD will display:
CURRENT ADJUST.
X% OF FLC
Press the Mode and ▼ keys simultaneously to exit the TEST/MAINTENANCE mode.
7.5.6 TEST/MAINTENANCE in RVS-DN 1000V and RVS-DN 1200V
Press the Mode and ▼ keys simultaneously.
The LCD will display:
STORE ENABLE
DEFAULT PARAMET.
At this point press the Store + Mode keys simultaneously to obtain the default parameters.
CAUTION!
OR
Press the Select key again
The LCD will display:
RESET STATISTICS
Press Reset + Store keys simultaneously to reset statistics.
The LCD will display:
DATA SAVED OK
And after few seconds the LCD will display automatically:
STATISTICAL DATA
- **** -
OR
Press the Select key again
The LCD will display:
PROGRAM VERSION
STRT.DN 1K-270105
Press the Select key again
The LCD will display:
VOLTAGE ADJUST.
X VOLT
(This page is for factory use only)
Press the Select key.
The LCD will display:
CURRENT ADJUST.
X% OF FLC
(This page is for factory use only)
Press the Mode and ▼ keys simultaneously at each point to exit the TEST/MAINTENANCE mode.
Obtaining DEFAULT PARAMETERS erases all previously modified settings
and requires the operator to reprogram all parameters that differ from the
factory default.
Note: It is especially important to reprogram the FLC (as shown on the label of
the RVS-DN), FLA and voltage protection values again.
Displays operating current as a percentage of motor FLA (Full Load Ampere).
RVS-DN’s Default Display. After pressing the Mode or Select keys, a time delay
is initiated. Following the delay the LCD returns to display % OF MOTOR FLA.
Displays the current of the motor and mains voltage.
Note:
These measurements are not shown in RVS-DN 1000V and RVS-DN 1200V
models.
Displays the motor winding insulation level (displays only if the optional motor
insulation card is installed).
Displays the resistance level of the motor’s thermistor (displays only if the
optional analog card is installed).
Displays only if there is no motor insulation or analog option card installed in the
RVS-DN.
Note:
This ignores the communication cards. Even if a communication card is installed
this message can display.
OVERLOAD TRIP is operational when running
(the RUN LED is lit), except if using the
EXPANDED SETTING as described in section
6.5.5 page 58.
The O/L circuitry incorporates a thermal memory
register that calculates heating minus
dissipation of the motor. The RVS-DN trips when
the register fills up.
The thermal register resets itself 15 minutes
after the motor stops.
OVERLOAD DELAY
4 SEC – AT 5 FLA
1–10sec. Sets
OVERLOAD
DELAY at
ATTENTION!
Overload protection is not
operative during soft-start or
soft stop.
500% of the
motor’s FLA.
Refer to section 7.7.2.1 on page 71.
UNDERVOLT. TRIP
300 VOLT
UNDERVOLT. DELAY
5 SEC.
120-600V
For RVS-DN
1000V &
1200V:
600-1100V
1 –10sec. Sets
Sets UNDER
VOLTAGE
TRIP.
UNDERVOLT
TRIP DELAY.
Trips the RVS-DN when mains voltage drops
below the level that was set for a time longer
than UNDERVOLT DELAY.
Refer to section
7.7 page 66 for different factory
settings depends on the rated voltage of the
RVS-DN.
Notes
:
Becomes operational only after the start signal.
When voltage drops to zero (voltage outage) the
RVS-DN will trip immediately, thus overriding the
delay.
OVERVOLT. TRIP
480 VOLT
OVERVOLT. DELAY
2 SEC.
150-750V
For RVS-DN
Sets OVER
VOLTAGE
TRIP.
1000V &
1200V:
1100-1440V
1 –10sec. Sets
OVERVOLT
TRIP DELAY.
Trips the RVS-DN when mains voltage
increases above the level that was set for a time
longer than OVERVOLT DELAY.
Refer to section
7.7 page 66 for different factory
settings depends on the rated voltage of the
RVS-DN.
Can not be set lower than the UNDER
VOLTAGE setting.
To store selected parameters scroll through all
parameters until you reach STORE ENABLE
MAIN PARAMETERS, then press the Store key.
After you store a parameter successfully the
DATA SAVED OK message will display.
If RVS-DN fails to store the parameter the LCD
Will display the STORAGE ERROR message
(refer to section
Note
:
9 on page 95 for more details).
Pressing the Store key when the STORE
ENABLE XXXXX PARAMETERS message does
not appear on the display has no effect.
7.7.2.1 Overload Calculation
Note:
In the overload procedure measurement of the current is limited to 5 x motor FLA to prevent saturation from
affecting the calculation. Therefore the trip time at 5 x motor FLA will be identical to the trip time at 8 x motor
FLA.
The approximate trip time is calculated as follows:
1!! represents the
2nd level tacho
gain
2!! represents the
3rd level tacho
gain …….
5!! represents the
6th level tacho
gain.
Refer to section
7.7.3.1 on page 75.
Note:
When RVS-DN is connected Inside Delta,
only CURVE 0 is applied.
Notes:
(1) This parameter will appear only if the
optional PCB is installed and dip switch # 2
is set to on. Refer to section
57 for dip switch setting details.
(2)
Tacho Feedback is operational in its
basic form. Additional curves except for the
basic linear curve are optional.
(3) Consult the factory for the correct
tacho selection and mechanical installation.
0 –1.0 SEC. Sets RVS-DN’s
PULSE START
TIME.
PULSE START
level is 80% Un.
Intended to start high friction loads that
require high starting torque for a short time.
A pulse of 80% Un without CURRENT
LIMIT is initiated to break the load free.
Pulse duration is adjustable, 0.1–1sec.
After this pulse the voltage is ramped down
to INITIAL VOLTAGE setting before
ramping up again to full voltage according
to the START PARAMETERS settings.
6.5.2 on page
Note:
There is no PULSE START function when
RVS-DN is connected Inside Delta.
10-50%
After reaching
50% the
display
changes to:
INITIAL
CURRENT
100-400%.
Note:
The range of
the INITIAL
VOLTAGE can
be extended to
5-80% by using
Sets motor’s
INITIAL
STARTING
VOLTAGE.
The motor’s
torque
is directly
proportional to
the square of the
voltage.
This adjustment also determines the inrush
current and mechanical shock. A setting
that is too high may cause high initial
mechanical shock and high inrush current.
This can occur even if CURRENT LIMIT is
set low because the INITIAL VOLTAGE
setting overrides the CURRENT LIMIT
setting.
A setting that is too low may result in
prolonged time until the motor starts to turn.
In general, this setting should ensure that
the motor starts turning immediately after
start signal.
the
EXPANDED
SETTING as
described in
section
6.5.5
page 58.
CURRENT LIMIT
400% OF FLA
100-400%.
Note:
The range of
the CURRENT
LIMIT can be
extended to
100-500% by
using the
EXPANDED
SETTING as
described in
section
6.5.5
page 58.
Sets motor’s
highest curr
ent
during starting.
Note:
When INITIAL VOLTAGE is set its
maximum value, this displays changes to
INITIAL CURRENT.
When INITIAL CURRENT is set the RVSDN causes current ramp instead of voltage
ramp.
A setting that is too high will increase the
current drawn from mains and faster
acceleration.
A setting that is too low may prevent the
motor from completing acceleration process
and reaching full speed. In general, this
setting should be set to a value that is high
enough to prevent stalling.
Note:
CURRENT LIMIT does not operate during
RUN and SOFT STOP.
OF STARTS
permitted during
STARTS
PERIOD (see
below).
the period of time defined by STARTS
PERIOD.
If you try to start even one more time within
that period the START INHIBIT period will
take effect.
During the START INHIBIT period the
PERIOD
during which
NUMBER OF
WAIT BEFORE RST XX MIN message will
be displayed.
STARTS is being
counted.
INHIBIT time
which starting is
disabled after
TOO MANY
STARTS trip.
End of Acceleration relay can signal that
for End of
Acceleration
motor is at its RUN position which can be
used for motor loading.
relay to close.
PARAMETERS on page 71.
The RVS-DN incorporates five starting curves to enable you to select a suitable torque curve.
Start Curve 0
– Standard curve (Default). This curve is the most suitable curve for preventing prolonged
starting and motor overheating.
Note:
When RVS-DN is connected Inside Delta, the RVS-DN will always use CURVE 0 regardless of the curve
defined.
Start Curves 1-3
- Pump Control - Induction motors produce peak torque of up to 3 times the rated torque
towards the end of starting process. In some pump applications, this peak may cause pressure surge in the
pipes.
Start Curves 1, 2, 3 – During acceleration, before reaching peak torque, the Pump Control Program
automatically controls the voltage ramp-up, thus, reducing peak torque.
Choice of four pump control acceleration curves: 0!, 1!, 2!, 3!
Start Curve 4 (Torque) – Torque Controlled acceleration - This provides a smooth time-controlled torque
ramp for the motor and the pump.
Note:
Always start with START CURVE 0. If towards the end of acceleration peak torque is too high (pressure is too
high) proceed to Curve 1, 2, 3 or 4 in that order.
1!! represents the
2nd level tacho
gain
2!! represents the
3rd level tacho
gain …….
5!! represents the
6th level tacho
gain.
Notes:
(1) This parameter will appear only if the
optional PCB is installed and dip switch # 2
is set to on. Refer to section
57 for dip switch setting details.
(2)
Tacho Feedback is operational in its
basic form. Additional curves except for the
basic linear curve are optional.
(3) Consult the factory for the correct tacho
selection and mechanical installation.
1–30sec.
Note:
The range of the
DEC. TIME can
Sets
DECEL
ERATION
TIME of the
motor.
Used for controlled deceleration of high
friction loads. Determines the motor’s
voltage ramp down time.
be extended to
1-90 sec. by
using the
EXPANDED
SETTING as
described in
section
page 58.
6.5.5
Note:
When the RVS-DN operates with a bypass
contactor, the bypass contactor can be
controlled by the RVS-DN’s End of
Acceleration relay.
Upon soft stop initiation the End of
Acceleration relay is degenergized, the load
is transferred to the RVS-DN, and voltage
The RVS-DN incorporates 5 stopping curves that enable you to select the suitable torque curve
Stop Curve 0 – Standard Curve (Default) – voltage is linearly reduced from nominal to zero.
The most stable and suitable curve for preventing prolonged stopping and motor overheating.
Stop Curves 1, 2, 3 Pump Control
– In some pump applications, when pumping to higher elevation a
considerable part of the torque is constant and does not decrease with speed.
It may happen that during the deceleration process when voltage decreases the motor torque abruptly falls
below load torque (instead of smoothly decreasing speed to zero), thus closing the valve and causing water
hammer.
Curves 1, 2 and 3 eliminate the water hammer phenomenon. In pump applications the load torque decreases
in square relation to the speed, thus correcting control of voltage to reduce torque adequately and to smooth
deceleration to a stop.
Note
:
It is recommended that STOP CURVE 0 be used for all standard applications (not pumps).
To reduce water hammer, select STOP CURVE 1, then 2, then 3 in that order.
Curve 4 - Torque Curve
- Provides linear deceleration of the torque. In certain loads, linear torque
deceleration can result in close to linear speed deceleration, thus eliminating stall conditions.
Note:
Always use STOP CURVE 0. If the motor stalls quickly instead of slowly decreasing its speed, select STOP
CURVE 1, 2, 3 or 4 in that order until the problem is solved.
7.7.6 Energy Save & Slow Speed Parameters – page 5
EN. SAVE & SL. SPD
PARAMETERS
Display and Default
(refer to section
Range Description Remarks
Displays in MAXIMIZED MODE only
Values
SAVING ADJUST.
0 (MIN)
0(MIN.) –
10(MAX.)
Sets required
energy saving
level.
SLOW SPEED TORQ.
8
1(MIN.) –
10(MAX.)
Sets SLOW
SPEED
TORQUE.
MAX SLOW SP TIME
30 SEC.
1-30sec.
Note:
The range
of the MAX
SLOW SP
Sets maximum
time for SLOW
SPEED
TORQUE
operation.
TIME can
be
extended to
1-250 by
using the
EXPANDED
SETTING
as
described in
section
6.5.5 page
58.
STORE ENABLE
Same as STORE ENABLE MAIN
EN.SAVE & SL.SPD
6.5.1 page 56 for changing mode)
Activated when the motor has a light load for
extended periods of time. Supply voltage to the
motor decreases (lowering the rotating magnetic
field intensity), thus reducing the reactive current
and copper/iron losses.
In order to activate this function:
• Program PROG. INPUT #7 to ENERGY SAVER
(refer to section
7.7.8 on page 83)
• Connect control inputs voltage to input terminal
7
Note
:
When using Energy Save function, harmonics
should be taken into consideration. At maximum
energy save settings, the 5
th
harmonic may
exceed 30% of the RMS current value.
ATTENTION!
To meet CE standards while in
energy save mode, the user
may be required to employ
additional mitigation methods.
Determines the torque while motor is operating at
1/6 of nominal speed. Refer to section
7.7.8.1 on
page 84.
Determines the maximum allowable operation
time at slow speed.
RVS-DN will trip when this time is exceeded and
a LONG SLOW-SPEED TIME message will
display.
WARNING!
Operating current while motor is
running at 1/6 speed is much
higher than nominal current and
motor ventilation is much
weaker. Special caution must be
taken to prevent overheating
when running the motor at slow
speed for long periods of time.
(refer to section 6.5.1 page 56 for changing mode)
Range Description Remarks
YES
Note:
The range
of the
PHASE
LOSS can
be
extended to
YES or NO
by using the
EXPANDE
D SETTING
as
described in
section
6.5.5 page
58.
Sets PHAS
LOSS trip
E
PHASE LOSS protection trips the RVS-DN when 1
or 2 phases are missing for more than 1 sec.
Notes:
If RVS-DN trips on PHASE LOSS do the following:
(1) In cases where the current transformers are
connected externally (RVS-DN 950-3000A
models), verify that that the current transformers
are not grounded. Each current transformer is
connected with its 2 wires only and these wires are
not grounded externally.
(2) Check phase voltages related to terminal 21
even if terminal 21 is not connected. Verify that
phase voltages are within the required range of line
to neutral voltages.
(3) Verify that terminal 21 is connected correctly.
For terminal 21 connection refer to section
page 19.
(4)
If terminal 21 is connected correctly,
disconnect terminal 21 and try to start when
terminal 21 is disconnected.
(5) If all previous actions are do not solve the
problem and the you are sure that no real phase
loss exists, you can set PHASE LOSS Y/N
protection to NO.
This situation can occur in rare cases when there is
no real fault but the RVS-DN recognizes unusual
behaviour like when Total Harmonic Distortion in
Voltage (THDV) in the network is high.
(6) If this is a true case of PHASE LOSS then
after setting PHASE LOSS Y/N protection to NO
the motor will single phase and most likely be
tripped by the over load protection mechanism.
(7) PHASE LOSS setting is not valid in RVS-DN
1000V and RVS-DN 1200V.
(8) Phase loss might not be detected in motor
operating under a light load.
4.1
WARNING!
Do not set PHASE LOSS to
NO unless it is found to be
necessary in the field!
PHASE SEQ. Y/N
NO
NO/YES Sets PHASE
SEQUANCE
When RVS-DN is connected Inside Delta, you can
not set PHASE SEQUENCE protection to NO.
(refer to section 6.5.1 page 56 for changing mode)
Range Description Remarks
OFF, 0.2–
5Mohm
Sets
INSULATION
Insulation testing is enabled only when motor is not
running and after 60 seconds in the Stop state.
ALARM level.
OFF, 0.2–
5Mohm
Activates
INSULATION
ALARM trip.
While motor is running the value of the insulation
resistance shown in the display is the last
measured value prior to starting of the motor. While
testing, if the insulation level drops below Alarm
level - a message: MOTOR INSULATION ALARM
will display and the insulation alarm relay will be
energized. The Fault LED on the control keypad of
the RVS-DN will blink.
The alarm will disappear if insulation level will
return to normal for more than 60 seconds.
While testing, if the insulation level drops below
Fault level - a message: INSULATION TRIP will
display and the fault relay of the RVS-DN will go to
the fault position (as programmed in the I/O
PROGRAMMING PARAMETERS).
The Fault LED on the front of the RVS-DN will light.
In this status motor can not be started.
Note
:
In order for the INSULATION ALARM or TRIP
option to operate properly an isolating device, such
as a line contactor must exist between the mains
and the RVS-DN and it must be open.
NO/YES Sets RVS-
DN’s AUTO
RESET
mode of
operation.
The RVS-DN can be automatically reset for
UNDER VOLTAGE and PHASE LOSS faults.
Refer to section
7.7.2 on page 69 for details on
setting UNDER VOLTAGE protection.
To start the motor after UNDER VOLTAGE and
PHASE LOSS faults have been cleared, remove
the START signal and recommence the signal.
AUTO RESET function has a non-programmable
time delay of 60 seconds.
PTC/NTC Sets input
THERMISTO
R TYPE
Available only when analog card is installed.
Measures the motor’s thermistor resistance and
trips the RVS-DN when the level decreases below
set level.
THERMISTOR TRIP
OFF
OFF, 0.1–
10Kohm
Sets RVSDN’s
THERMISTO
R TRIP mode
Note:
THERMISTOR TRIP has a factory preset time
delay of 2 sec.
of operation.
UNDER CUR. RESET
OFF
10–
120min.,
OFF.
Sets RVSDN’s UNDER
CURRENT
RESET time
delay.
If the UNDER CUR. RESET setting is OFF then
RVS-DN will not automatically reset after an
UNDER CURRENT TRIP fault occurs.
If you set the UNDER CUR. RESET setting to a
time value then RVS-DN will automatically reset
with a delay (the time defined for UNDER CUR.
RESET). If the start command is not removed,
motor will restart automatically after the delay time.
During the delay time a message U/C TRIP.RST
IN: XX MIN. is displayed.
Refer to section 7.7.2 on page 69 for details on
setting of UNDER CURRENT TRIP.
All RVS-DN except 1000V
and 1200V
AN. OUT PARAMETER
I, 0...200% OF FLA
For RVS-DN 1000V and
1200V
ANALOG OUTPUT
All RVS-DN except
1000V and 1200V
I, 0...200% OF FLA
For RVS-DN 1000V
and 1200V
NORMAL/INVERTED
NORMAL
STORE ENABLE
Same as STORE ENABLE
I/O PROG.PARAMETERS
7.7.8.1 Terminal 7 and 8 Programming
Displays in MAXIMIZED MODE only
(refer to section
6.5.1 page 56 for changing mode)
Sets
ANALOG
OUTPUT
mode of
operation.
Available when the analog card is
installed.
The dip switch settings on the analog
card define full scale as either 20mA
or 10V. Refer to section
59 for more details.
All RVS-DN
except 1000V and 1200V
The full scale of the analog card is
related to 200% of FLAmotor current>).
For RVS-DN 1000V and RVS-DN
1200V
The full scale of the analog card is
related to 200% of FLC
RVS-DN current
When INVERTED is set the full scale
relates to 0 current and 0mA, 0V or
4mA relates to 200% FLC.
MAIN PARAMETERS on page 71
6.7 on page
(2x <rated
(2x <rated
>).
Input Terminal 7
Description
Programmed Function
RESET (default setting) Input terminal 7 is used as RESET to reset all RVS-DN faults.
The RESET command will take effect only if the start command is removed.
SLOW SPEED While input terminal 7 is on, the motor will start slow speed forward.
Refer to section
7.7.6 on page 80 and section 4.11 page 23.
ENERGY SAVER While input terminal 7 is on, the motor will operate in the ENERGY SAVER mode.
Refer to section
7.7.6 on page 80.
Input Terminal 8
Description
Programmed Function
DUAL ADJUSTMENT
(default setting)
Input terminal 8 is used to start and stop from the DUAL ADJUSTMENT
PARAMETERS page. Refer to section
Note:
7.7.5 on page 79.
When dip switch #3 is on, DUAL ADJUSTMENT parameters will operate the RVSDN with D.ADJ.:GENERATOR PARAMETERS. Refer to section
4.17 on page 28.
RESET Input terminal 8 is used as RESET to reset all RVS-DN faults.
The RESET command will take affect only if the start command is removed.
SLOW SPD REVERSE In order to operate in SLOW SPEED REVERSE terminal 7 must be programmed
as SLOW SPEED and the control input voltage must be connected to terminal 7
as well.
You can give the reverse command before the motor is started or during operation
at SLOW SPEED.
Connecting control voltage to terminal 8 before the motor is started, starts the
motor in reverse direction.
Connecting the control voltage while the motor is running at SLOW SPEED stops
the motor for 0.6 – 2 sec (according to motor size) before it reverses its direction.
Refer to section
7.7.9 Comm. Parameters – Page 8 – With the Modbus Card
85 • Control Keypad
COMM.PARAMETERS
- **** -
Display and Default
Values
PROTOCOL
MODBUS
BAUD RATE
9600 (MODBUS)
PARITY CHECK
EVEN
SERIAL LINK NO.
OFF
S. LINK PAR. SAVE
DISABLE
SER. LINK CONTROL
DISABLE
Displays in MAXIMIZED MODE only
(refer to section 6.5.1 page 56 for changing mode)
Range Description
MODBUS Sets RVS-DN’s communication PROTOCOL.
Operational when the optional communication card is installed.
1200, 2400,
Sets RVS-DN’s BAUD RATE.
4800, 9600
EVEN, ODD,
Sets RVS-DN’s communication PARITY CHECK.
NO
OFF,1 – 247 Sets RVS-DN’s communication SERIAL LINK NO.
ENABLE/
Enables parameters modification via serial communication
DISABLE
ENABLE/
Enables start, stop, reset etc… via serial communication
DISABLE
MODBUS TIME OUT
OFF
0.1-60 SEC.,
OFF
Sets MODBUS TIME OUT. If no valid Modbus communication
during MODBUS TIME OUT, the HRVS-DN will trip.
Trip occurs only if the following conditions exist:
• SER. LINK CONTROL is set to ENABLE
• SERIAL LINK NO. is not set to OFF
If MODBUS TIME OUT is set to OFF protection is disabled.
FRONT COM ADDRES
OFF,1 – 247 Future enhancement
OFF
STORE ENABLE
COMM. PARAMETERS
Notes:
(1) Same as STORE ENABLE MAIN PARAMETERS on page 71.
(2)
After changing communication parameters and storing them, control power
must be switched off and on to load new communication parameters.
7.7.10 Comm. Parameters – Page 8 – With the Profibus Card
COMM.PARAMETERS
- **** -
Display and Default
(refer to section 6.5.1 page 56 for changing mode)
Range Description
Displays in MAXIMIZED MODE only
Values
COMM. PROTOCOL
PROFIBUS
PROFIBUS/
MODBUS
Sets RVS-DN’s communication protocol.
Operational when the optional communication card is installed.
ergized and protects the motor when the frequency is less than 45 or
greater than 65Hz.
7.8.2 Phase Loss
Operational when the RVS-DN is en
ergized, provided this protection has not been de-activated. Phase loss
protection trips the RVS-DN when 1 or 2 phases are missing for more than 1 sec.
Refer to section
7.7.7 on page 81 parameter PHASE LOSS. Y/N.
7.8.3 Phase Sequence
Operational when the RVS-DN is en
ergized, provided this protection has not been de-activated. Phase
sequence protection trips the RVS-DN when phase sequence is wrong.
Refer to section 7.7.7 on page 81 parameter PHASE SEQ. Y/N.
7.8.4 Wrong Connection
Operational after start signal. Trips if
motor is not properly connected to the RVS-DN’s load terminals, when
internal disconnection is detected in the motor winding. This protection is not active when D. ADJ.:
GENERATOR PARAMETERS is selected.
7.8.5 Shorted SCR
Trips the RVS-DN if one or more of the SCRs have been shorted. This pr
otection is not active when D. ADJ.:
GENERATOR PARAMETERS is selected.
7.8.6 Heat-Sink Over Temperature
Thermal sensors are mounted on the
heat-sink and trip the RVS-DN when the temperature rises above 85ºC.
WARNING!
The over temperature protection is designed to operate under normal
conditions, e.g., in the event of extended low overload, insufficient ventilation
due to fan stoppage or air flow blockage.
Incorrect RVS-DN selection, frequent starting at max. conditions, or repeated
starting under fault conditions can cause the SCR to overheat and fail before
the heat-sink reaches 85°C thereby causing the thermal sensors to trip the
RVS-DN.
7.8.7 External Fault
External Fault becomes operational
when RVS-DN is energized.
The RVS-DN will trip if contact closes for more than 2 sec.
WARNING!
Do not use External Fault when terminal 21 is not connected to ground.
7.8.8 Fault and Reset
When any of the above protections (
except INSULATION ALARM) trip, the RVS-DN locks in a fault condition,
disabling firing of the thyristors. Fault LED lights, fault description is displayed on the LCD and the fault relay
operates.
• For local resetting, after fault has been removed, press Reset key.
• Remote resetting can be performed through terminals 7 or 8 (see I/O PROGRAMMING section
7.7.8 page 83).
When a fault occurs, followed by a voltage outage, the fault condition is latched and reappears upon voltage
restoration.
Resetting of all faults, except for UNDER CURRENT protection, (Local, Remote, Serial Link or Auto Reset) is
not possible as long as the START signal exists.
7.8.9 Auto Reset
UNDER VOLTAGE and
PHASE LOSS faults can auto-reset (refer to section
7.7.7 on page 81). The RVS-DN
will reset itself 60 seconds after voltage was fully restored, provided that the START signal is removed.
UNDER CURRENT fault can be set to auto-reset (refer to section
7.7.7 on page 81).
The RVS-DN will reset itself when a programmed time delay has elapsed, even if the START signal is not
removed!
MOTOR INSULATION ALARM auto-resets if the resistance exceeds the INSULATION ALARM level (refer to
section
7.7.7 on page 81).
7.9 Timing Occurrence Table
Active During
Timing And Occurrence
Too many starts with START INHIBIT period
Electronic overload with curve selection
Start Run Stop
√
√
Soft
Stop
O/C shear pin (jam)
RVS-DN protection – trip immediately at I≥850% FLC
Motor protection – trip function
During start – factory set at 850% FLA after O/C DELAY.
√ √
√
√
√
During run – adjustable 200 – 850% FLA after O/C DELAY.
Under current adjustable time delay
Phase loss √ √
Phase sequence √
Under voltage with adjustable time delay. Time delay is
override in case of PHASE LOSS.
Over voltage with adjustable time delay
Long start time (stall protection)
Shorted SCR √
Wrong connection (load loss)
External fault – input from a N.O. contact
SCR protection by Metal Oxide Varistors (MOV)
√
√
√ √
√ √
√
√
√ √ √ √
√ √ √ √
RVS-DN over-temperature √ √ √ √
RVS-DN internal test, when the On LED is lit.
√ √ √ √
Motor insulation test (optional) – Two levels for alarm &
trip. When installed, operates when mains voltage is
√
removed.
Motor thermistor (optional) – programmable PTC/NTC,
with adjustable trip level.
It is necessary to connect a motor to load terminals; otherwise S.SCR or WRONG CONNECTION faults are
activated. Other loads such as incandescent light bulbs, resistors, etc. may also cause a WRONG
CONNECTION fault.
When mains voltage is connected to the RVS-DN, even if control voltage
1
is disconnected, full voltage may appear on the RVS-DN load terminals.
Therefore, for isolation purposes, it is necessary to connect an isolating
device upstream to the RVS-DN.
Power factor correction capacitors must not be installed on the load side
2
of the RVS-DN. When required, install capacitors on the line side of the
RVS-DN.
When using Inside delta connection, wrong connection of the RVS-DN or
3
the motor may damage the motor; therefore please confirm that the
motor is connected properly!
Do not interchange line and load connections
4
Before starting the motor verify its rotation direction. If needed,
5
disconnect the rotor from the mechanical load and verify the correct
direction of rotation.
Prior to start up procedure, make sure that line voltage and control
6
voltage match the ones shown on the name plate of the RVS-DN.
When the START signal is initiated and a motor is not connected to load
7
terminals, the SHORT SCR or WRONG CONNECTION protection will be
activated.
If acceleration time is too short, increase
ACCELARATION TIME setting and/or decrease
CURRENT LIMIT setting (when decreasing CURRENT
LIMIT, make sure that the motor increases speed
gradually and does not stall).
Yes
• Check LAST START PERIOD and set MAX. START TIME to approximately 5 seconds
longer than the LAST START PERIOD.
• For future reference it is advised to keep records of the following parameters in the
STATISTICAL DATA:
LAST START PERIOD
LAST START MAX I
91 • Starting Procedure
8.2
Examples of Starting Curves
8.2.1 Light Loads - Pumps, Etc.
(In these cases the actual current is always lower than the CURRENT LIMIT setting)
INITIAL VOLTAGE- set to 30%
CURRENT LIMIT - set to 300-350%
ACCELERATION TIME- set to 10 sec.
Upon start, the voltage quickly increases to the INITIAL VOLTAGE value (30% of Un) and then gradually
ramps-up to nominal.
The current will simultaneously increase to peak current value (lower than the CURRENT LIMIT setting),
before smoothly decreasing to the operating current.
8.2.2 High Inertia Loads: Crushers, Centrifuges, Mixers, Etc.
(In these cases the actual current is at the CURRENT LIMIT setting during part of the starting time)
INITIAL VOLTAGE– set 40%
CURRENT LIMIT– set 400%
ACCELERATION TIME– set 3 sec
Upon START the voltage and current increase until the current reaches the CURRENT LIMIT value. The
voltage remains at this value until the motor reaches close to nominal speed, where current starts to decrease
and voltage continues to ramp-up to nominal.
8.2.3 Special Starting Using DUAL ADJUSTMENT
Using two st
arting characteristics, the RVS-DN will accelerate using standard characteristics (INITIAL
VOLTAGE, ACCELERATION TIME and CURRENT LIMIT). After transition (tx) (IMMEDIATE relay delay),
voltage to input terminal 8 is switched on using the DUAL ADJUSTMENT characteristic to complete
acceleration.
Perform the following steps:
• To use DUAL ADJUSTMENT automatically, connect IMMEDIATE in series to input terminal 8 as shown in
section
8.2.3.1 below.
• Program IMMEDIATE/SHEAR-PIN relay to IMMEDIATE (default setting) and program RELAY ON DELAY to
tx.
• Program PROG. INPUT #8 to DUAL ADJUSTMENT (default setting).
• Program standard parameters and DUAL ADJUSTMENT parameters as shown in the table below.
Using two starting characteristics, the RVS-DN will accelerate to reach the 200% current limit. After tx voltage
to PROG. INPUT #8 is switched on, using the DUAL ADJUSTMENT characteristic to complete acceleration.
Standard Parameter DUAL ADJUSTMENT Parameter
INITIAL VOLTAGE 10% 25%
ACCELERATION TIME t1 = 2-30 sec t2 = 2-30 sec
CURRENT LIMIT 200% 300-400%
RELAY ON DELAY tx = 1-60 sec. -----
8.2.3.1 Special Starting – Using DUAL ADJUSTMENT – Wiring Diagram
8.2.4 Choosing a Suitable Pump Curve (Centrifugal Pumps)
.1 Starting Curve
8.2.4
• Adjust MAIN PARAMETERS as necessary (FLA, FLC, etc.).
• Set STARTING CURVE, ACCELERATION TIME, CURRENT LIMIT, and INITIAL VOLTAGE to their default
values (curve 0, 10 sec., 400% and 30% respectively).
• Start the pump while watching the pressure gauge as the pump starts and look for overshooting (“pressure
surge”) of the gauge needle above the target pressure. In case of over pressure, choose a peak torque
reduction curve (SOFT START CURVE 1!!).
• Set SOFT START CURVE 1!!, increase ACCELERATION TIME to 15 seconds and reduce CURRENT LIMIT
to 350%. Start the pump and watch the pressure gauge while the pump starts.
• In most cases, overshooting is reduced. If the overshoot persists, increase ACCELERATION TIME to 25
seconds (confirm with motor manufacturer) and try again.
• If the overpressure persists, increase the SOFT START CURVE setting to 2!!, or 3!!, if necessary. Each
increase in the SOFT START CURVE setting will reduce the peak torque, thus reducing the overpressure
and preventing “pressure surge” during start.
8.2.4.2 Stopping Curve
• Adjust MAIN PARAMETERS as necessary (FLA, FLC, etc.)
• Set SOFT STOP CURVE and DECELERATION TIME, to their default values (curve 0, 10 sec., respectively).
• Stop the pump, watching the pressure gauge and check valve as the pump stops. Look for overshooting
(“water hammer”) of the gauge (abruptly stops the pump and the motor).
• Select SOFT STOP CURVE 1!! and increase DECELERATION TIME to 15 seconds. Stop the pump and
watch the pressure gauge and the rate of closing of the check valve as the pump stops. Abrupt stopping of
the pump and motor will cause a loud audible noise emitted from the check valve.
• In most cases, “water hammer” is reduced. If “water hammer” persists, increase the time to 25 seconds
(confirm with motor manufacturer) and try again.
• If “water hammer” persists, increase the SOFT STOP CURVE setting to 2!!, or 3!!. Each increase in the
SOFT STOP CURVE will reduce the abrupt stop of the pump, thus preventing the “water hammer”
phenomenon.
8.2.4.3 FINAL TORQUE During Soft-Stopping a Pump Motor
While decelerating, the check valve may close before DECELERATION TIME has elapsed, thus allowing
current to flow through stator winding causing unnecessary heat. Select FINAL TORQUE sensitivity to 1 and
stop the pump, then confirm that the current stopped flowing through the motor shortly after the check valve
closed.
If current still flows more than 3-5 seconds after check valve closure, increase FINAL TORQUE (up to a
maximum value of 10) to stop current flow earlier.
Upon fault – motor stops, Fault LED lights and Fault Relay chances position. The LCD shows TRIP: < fault
description>. (for example: TRIP: UNDER CURRENT).
INSULATION
ALARM
(Optional) Alarms when the motor insulation level decreases below the level set.
Alarm ceases automatically 60 seconds after resistance exceeds the level set.
Check motor and cable insulation.
For INSULATION ALARM/TRIP protection settings refer to section
7.7.7 page 81.
INSULATION TRIP
THERMISTOR
TRIP
TOO MANY
STARTS
LONG START
TIME
O/C – SHEAR PIN
(Optional) Trips the RVS-DN when the motor insulation level decreases below the
trip level set.
Check motor and cable insulation level.
For INSULATION ALARM/TRIP protection settings refer to section
7.7.7 page 81.
(Optional) Trips the RVS-DN when the motor thermistor resistance decreases
below trip level set.
Check resistance of the thermistor and cables; check motor temperature near
thermistor location.
For THERMISTOR TRIP protection setting refer to section
7.7.7 page 81.
Trips the RVS-DN if the number of starts, during STARTS PERIOD exceeds the
preset number.
Wait until motor and RVS-DN cool down – according to NUMBER OF STARTS,
STARTS PERIOD and START INHIBIT settings. Refer to section
7.7.3 page 75.
Trips the RVS-DN if output voltage does not reach nominal at the preset MAX.
START time.
Check FLA, FLC, and MAX START TIME settings. Increase INITIAL VOLTAGE,
CURRENT LIMIT & MAX. START TIME or decrease ACC. TIME as necessary.
For start parameters settings refer to section
7.7.3 page 75.
Trips the RVS-DN when:
• Instantaneously when current exceeds 8.5 x RVS-DN FLC
• During starting when current exceeds 8.5 x Motor FLA
• During running when current exceeds 200-850%
O/C Shear-Pin has a programmable delay of 0-5 seconds where the RVS-DN
detects the fault and does not trip before time delay has elapsed (delay is overriden
when current reaches 8.5 x RVS-DN FLC).
Check that motor is not stalled or jammed.
Check FLA, FLC settings.
Check motor and cable connections.
Perform a “Megger” test to verify motor and cable’s condition.
For protection parameters settings refer to section
CAUTION
OVERLOAD
Check that “Megger” maximum voltage is no more than 500V!
Disconnect terminal 21 before performing a “Megger” test.
Trips the RVS-DN when current exceeds the OVERLOAD TRIP level and the
thermal register has filled up.
Check FLA, FLC and overload settings and check motor current, then wait at least
15 minutes to let the motor and RVS-DN cool down before restarting.
For protection parameters settings refer to section
UNDER CURRENT
Trips the RVS-DN when line current drops below the preset level for the preset
time.
7.7.2 page 69.
7.7.2 page 69.
Check UNDERCURR. TRIP and UNDERCURR. DELAY settings; check line
currents through L1, L2, L3.
For protection parameters settings refer to section
Trips the RVS-DN when line voltage drops below the preset level for
the preset time.
Check UNDERVOLT. TRIP and UNDERVOLT. DELAY settings, check line
voltages on L1, L2, L3. When voltage drops to zero, the RVS-DN trips immediately
with no delay.
For protection parameters settings refer to section
7.7.2 page 69.
Trips the RVS-DN when line voltage increases above a preset level for
a preset time.
Check OVERVOLT. TRIP and OVERVOLT. DELAY settings, check line voltage on
L1, L2, L3.
For protection parameters settings refer to section
7.7.2 page 69.
Trips the RVS-DN if 1 or 2 phases are missing.
(1) In cases where the current transformers are connected externally (RVS-DN
950-3000A models), verify that that the current transformers are not grounded.
Each current transformer is connected with its 2 wires only and these wires are
not grounded externally.
(2) Check phase voltages related to terminal 21 even if terminal 21 is not
connected. Verify that phase voltages are within the required range of line to
neutral voltages.
(3) Verify that terminal 21 is connected correctly. For terminal 21 connection refer
to section
4.1 page 19.
(4) If terminal 21 is connected correctly, disconnect terminal 21 and try to start
when terminal 21 is disconnected.
(5) If all previous actions are do not solve the problem and the you are sure that
no real phase loss exists, you can set PHASE LOSS Y/N protection to NO.
This situation can occur in rare cases when there is no real fault but the RVSDN recognizes unusual behaviour like when Total Harmonic Distortion in
Voltage (THDV) in the network is high.
(6) If this is a true case of PHASE LOSS then after setting PHASE LOSS Y/N
protection to NO the motor will single phase and most likely be tripped by the
over load protection mechanism.
(7) Phase loss might not be detected in motor operating under a light load.
For PHASE LOSS protection setting refer to section
7.7.7 page 81.
PHASE LOSS setting is not valid in RVS-DN 1000V and RVS-DN 1200V.
Trips the RVS-DN if frequency is not in the range of 40-66.6Hz
Check that frequency variations are between 40-66.6Hz.
PHASE
SEQUENCE
Trips the RVS-DN if line phase sequence is wrong.
Check line phase sequence and if wrong, swap two wires on line side. If motor
now rotates in the wrong direction, swap two wires on load side of the RVS-DN.
MAX SLOW SP
TIME
For PHASE SEQUANCE protection setting refer to section
Trips the RVS-DN when operating at slow speed for extended periods.
7.7.7 page 81.
Check that operation time at Slow Speed is shorter than MAX SLOW SP TIME.
Note: Motor and RVS-DN may be overheated when operating at slow speed for an
extended period.
7.7.6 page 80.
WRONG
CONNECTION
For MAX SLOW SP TIME protection setting refer to section
Trips the RVS-DN when one or more motor phases is not properly
connected to RVS-DN’s load terminals or if there is an internal
disconnection in the motor winding.
Verify that the motor is connected properly.
See note 1 at the end of this section.
Trips the RVS-DN and prevents starting if any SCR is short-circuited or
when motor windings are shorted.
Check with an ohmmeter between L1-U, L2-V, L3-W; resistance > 20 KΩ.
Check for no voltage on terminals U, V, W (from parallel system or an independent
bypass).
SCRs may fail due to:
* High short current not protected by proper fuses
* High voltage spikes not protected by proper external varistors.
* Frequent starting at maximum conditions or fault conditions.
See note 1 at the end of this section.
OVER
TEMPERATURE
EXTERNAL
FAULT
WRONG
PARAMETERS
O/C or WRONG
CON.
Heat-sink over-temperature. Trips the RVS-DN when the heat-sink
temperature rises above 85°C.
Improve cooling or use a bypass contactor. Check that motor starting is not too
frequent.
Trips the RVS-DN when a N.O. contact between terminals 19-21
closes for over two seconds.
Check contact position and cause of closure.
Parameters not transferred from RAM to EEPROM or vice versa.
After loading new software version or after power up, press Reset, then Mode and
▼ simultaneously and save the default parameters by pressing Store and Mode
simultaneously.
(If the Fault LED is on, press Reset after WRONG PARAMETERS).
Refer to section
7.4 page 62 for reviewing and modifying parameters.
Trips the soft RVS-DN when connected Inside Delta and Wrong
connection or if over current is detected by the RVS-DN.
Verify that the motor is not stalled or shorted and check cables and wiring.
Verify that motor and RVS-DN are connected exactly as shown in section
4.22
page 30.
If circuitry is 100% confir
settings) is on. Refer to section
med it is possible to start when dip switch #7 (expanded
6.5.5 page 58. If a fault occurs again consult the
factory. The operator is advised to try operating one time only. Note that it is
useless to try starting in this mode more than once.
COMM. PORT
FAILED
Trips the RVS-DN if, when controlled via Profibus communication link, the
communication cable is torn or the communication from the PLC is lost.
Note that the occurrence of this fault depends on then “Watch Dog” function of the
Profibus controller.
You must reconnect the wiring and/or the communication with the PLC and wait for
a start command initiated by the PLC.
MODBUS TIME
OUT
If no valid Modbus communication during MODBUS TIME OUT, the HRVS-DN will
trip. Trip occurs only if the following conditions exist:
• SER. LINK CONTROL is set to ENABLE
• SERIAL LINK NO. is not set to OFF
For MODBUS TIME OUT settings refer to section
7.7.9 page 85.
Note 1:
When operating in DA:GENERATOR PARAMETERS, SHORTED SCR and WRONG CONNECTION
faults are not active.
If required, these faults may be eliminated by IMPLEMENTING DA:GENERATOR PARAMETERS.
Refer to section
4.17 page 28 for setting the RVS-DN in DA:GENERATOR PARAMETERS wiring.
Press MODE + ∇, press SELECT twice, the LCD displays the program
version (e.g. STRT.DN-011197)
Connection Diagram & Supply Network Type. Circle the correct main supply and add or erase parts in the
drawing:
Star, Delta, with/without neutral or ground
Define time of fault occurrence: (during start, after start, during soft stop,
end of soft stop, when closing B.P. contactor, when performing…)
Statistical Information RVS-DN Operative Information
Last Start Period: RVS-DN FLC:
Last Start Max. I Motor FLC:
Total Run Time: Initial Voltage:
Total Number Of Starts: Acceleration Time:
Last Trip: Current Limit:
Trip Current:
Total Number Of Trips:
Trip History :
Supply Voltage: Line to line 220-1200V (to be specified) + 10%-15%
Frequency: 45 – 65 Hz (fixed or variable frequency source)
Control Supply: 110-230VAC or 110VDC (to be specified) +10% - 15%
Control Inputs: Either same as Control Supply or by special order 24-230V AC/DC (to be
specified)
Load: Three phases, three/six wires, squirrel cage induction motor
Connection type: Standard 3 wire U, V, W connection, or 6 wire Inside Delta (programmable)
Start-Stop Parameters:
RVS-DN FLC: RVS-DN’s Full Load Current (FLC), according to ordering information
Motor FLA: Motor Full Load Ampere (FLA) 50-100% of RVS-DN FLC
Starting Curve 0
2 standard starting and stopping curves
(Standard)
Pump Control Curves (1!,
2!, 3!)
6 field selectable curves preventing over-pressure during start and water
hammer during stop
Torque Control Curve (4) 2 selectable curves preventing over-pressure during start and water hammer
during stop. In addition, these curves may be used for torque control starting of
constant torque applications.
Pulse Start Duration: A pulse of 80% Un, for an adj. time 0.1-1 Sec, for starting high friction loads
Initial Voltage: 10-50% Un (5-80%
(1)
)
Initial Current: 100-400% In (1 current control starting curve, appears when INITIAL VOLTAGE
is displayed, up arrow is pressed, and INITIAL VOLTAGE has reached its max.)
Current Limit: 100-400% of Motor FLA (100-500%
Acceleration Time: 1-30 Sec (1-90 sec
Deceleration Time: 1-30 Sec (1-90 sec
CURRENT LIMIT, ACC. TIME and DEC. TIME
Energy Saving: Energy save for lightly loaded motors
Slow Speed Torque: Torque while motor is at 1/6 nominal speed
Tacho and Linear
12 field selectable curves – defining gain control, improving tacho feedback
Acceleration:
Note:
Motor Protection:
(1) Refer to section 6.5.5 page 58 for Expanded setting.
Too Many Starts: Maximum number of starts, range: Off or 1-10, during a time period 1-60 min.
Starts Inhibit: Time period 1-60 min, when starting is prevented, after too many starts fault
Long Start Time (stall
Maximum allowable starting time 1-30 sec. (1-250 Sec
(1)
)
protection):
Over Current (shear-pin): Three trip functions:
At all time
- If I > 850% of FLC it trips the RVS-DN within 1 cycle (overrides the
value of the O/C – SHEAR PIN setting).
At starting process
- If I > 850% of FLA it trips the RVS-DN after O/C DELAY
(see here after)
Electronic Overload (I
At run time
O/C DELAY
2
t): Adjustable 75-150% of motor FLA, adjustable trip time at 500% In of 1-10 sec.
- If I > O/C – SHEAR PIN setting of FLA it trips the RVS-DN after
Under Current: Trips when current drops below 20-90% In, time delay 1-40 sec.
Optional auto reset after time delay.
Under Voltage: Trips when main voltage drops below 120-600V (600-1100V in RVS-DN 1000V
& 1200V models), time delay 1-10 Sec. Optional Auto Reset.
Over Voltage: Trips when main voltage increase above 150-750V (1100-1440V in RVS-DN
1000V & 1200V models), time delay 1-10 sec.
Phase Loss, Under/over
Frequency:
Phase Sequence: Trips when phase sequence is wrong
Long Slow Speed Time: Trips if operating at slow speed for more than 1-30 sec (1-250 sec
Trips when one or two phases are missing, or frequency is < 40Hz or > 65Hz.
Optional auto reset.
(1)
)
Wrong Connection: Prevents starting, trips if motor is not connected / incorrectly connected to the
RVS-DN (not active in DA:GENERATOR PARAMETERS)
Shorted SCR: Trips if one or more SCRs have been shorted (not active in DA:GENERATOR
External Fault: Trips when an external contact closes for 2 sec.
Motor Insulation
(optional):
Motor Thermistor
Alarm and trip level setting 0.2 – 5MΩ, trips and alarms when insulation
decreases below levels set
Trip level setting 1-10KΩ, trips when resistance decreases below the level set
(optional):
Note:
Control:
(1) Refer to section 6.5.5 page 58 for expanded setting
Displays: LCD in 4 – Field selectable languages and 8 LEDs
Keypad: 6 keys for easy setting
Aux Contact –
1 C/O, 8A, 250VAC, 2000VA
Immediate:
Aux Contact – End Of
Acceleration:
1 C/O, 8A, 250VAC, 2000VA
Fault Contact: 1 C/O, 8A, 250VAC, 2000VA
Insulation Alarm Contact
(optional):
Communication
(optional):
Communication
1 C/O, 8A, 250VAC, 2000VA
RS 485 with Modbus protocol for full control and supervision
Profibus DPV1 for full control and supervision
(optional):
Temperatures Operating: -10° to 50°C
Storage: -20° to 70°C
Standards:
Dielectric Test: 2500VAC
Degree of Protection: IP 20 for frame size A; IP 00 for frame sizes B, C, D, E, F, G
Pollution Degree: 3
EMC Emissions: EN 55011 CISPR 11 Class A
Immunity: EN 55082-2 ESD 8KV air, IEC 801-2;
Electric RF field 10 V/m, 20-1000Mhz, IEC 801-3
Fast transients 2KV, IEC 801-4
Safety: EN 600947-1 Related to safety requirements.
UL508C
Normal Service Conditions:
Altitude: Up to 1000m. For equipment to be used at higher altitudes consult the factory.
Humidity: 95% at 50°C or 98% at 45˚C
Fan and RVS-DN Consumption Ratings:
Size A (8-31A): No fan Total RVS-DN Consumption: 150VA
Size A (44-72A): Fan 35 VA Total RVS-DN Consumption 185VA
Size B: Fan 60 VA Total RVS-DN Consumption 210VA
Size C: Fans 105 VA (35VA x 3) Total RVS-DN Consumption 255VA
Size D, E, F, G Fans 150 VA (50VA x 3) Total RVS-DN Consumption 300VA
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