Eliwell RGF 312, RGF 320, RGF 300 Series, RGF 360, RGF 325 User Manual

RGF 300
Three-phase voltage regulator

WARNING !

HIGH LEAKAGE CURRENT: first connect to earth !

The rgf300 is a voltage regulator for three phase motors which operates
connected to the three phase mains voltage. The regulator must be installed by
qualified personnel who will connect the electric supply, attach the cables in
their permanent positions and commission the plant.
Incorrect installation of the rgf300 voltage regulator or the fan connected to it
may cause damage to objects or people so ensure the instructions in this manual
and all required security measures are read and followed carefully.

When receiving the goods, check that the packing is intact; in the event of any damage

•

due to transportation, notify the forwarding agent according to legal requirements.
The rgf series of products shown in this manual has been manufactured to the highest

•

standards.
The manufacturer declines all responsibility for accident, loss or damage caused by the

•

use of these appliances. These must be correctly installed by qualified personnel in
conformity with their destined use and, whenever needed, must undergo correct
maintenance which should be carried out while ensuring the safety of people, domestic
animals and goods.
The purchaser must previously ascertain the suitability of the product for the use it is

•

intended for and assume all consequent risks and responsibility.
The rgf300 is a mains voltage regulator which uses the phase-cut principle completely

•

controlled over the three phases. It has been designed to vary the effective voltage on
three phase asynchronous motors for fans following a control signal (either mA, VDC or
Ohm). The appliance is manufactured for industrial use and therefore meets the EMC
standards that relate to industrial environments.
Using the appliance for purposes other than the ones described above will be considered

•

incorrect. In particular, the appliance may NOT be used to supply machine tools or any
other machines where the motor torque-speed characteristic is not quadratic.
If the equipment is intended for civil, commercial and/or light industrial use,

•

supplementary components and other types of equipment are required which can be
supplied on specific request from the purchaser. In this case, the purchaser must
provide a suitable design of the plant in which the applia nce is to be installed ( compliant
with EN 60555 - 2/3 standards regarding disturbance produced by electrical household
appliances and the like.

We decline all responsibility for any errors in the catalogues, publications or other

•

written documents. The information in this manual is not binding and we reserve the
right to make changes to the products without prior notice, at any time and in an y way
that we deem convenient for production purposes or useful for increasing functionality
and performance.

RGF 300

2/53

SAFETY RULES !

This appliance has been designed to give excellent performance provided it is installed and used carefully in
a suitable electric environment by qualified personnel.
The following rules

Follow the instructions in this manual exactly and observe all safety measures in force.

•

Do NOT tamper with or disassemble the regulator's internal components; doing so will

•

INVALIDATE THE GUARANTEE and may cause unnecessary damage.
The regulator does not contain components that can be repaired by the user.

•

•

The regulator must be suitably and effectively earthed by the installer according to the standards in force;
earthing is essential for the EMC filt er to oper ate cor re ctly .

•

The user must be protected from the electric supply and the motor must be protected from possible
overloads in compliance with the standards in force.

DO NOT

•

DO NOT

•

circumstances.

•

Before supplying power to the unit, check carefully that the power and earth are correctly connected.

•

If the mains supply is "disturbed", which may be due to other electrical power components causing
irregularities in the supply (power contactors), it is recommended that supplementary three phase

SURGE ARRESTER

‘

•

Avoid repeatedly connecting and disconnecting the power supply to the regulator; a constant supply
keeps the regulator at working temperature and eliminates problems caused by condensate inside the
protection case.

•

Alternatively, use the remote terminal board contact 'MB' S2 = ON/OFF.

•

The S2 = ON/OFF contact on the MB terminal board does not cut the mains supply and therefore cannot
be used as a safety switch.

•

Install the regulator out of direct sunlight so that the container cannot get overheated and cause a
reduction in the maximum load current.

•

The appliance may operate at environmental temperatures up to 50°C. Do not install it where this
temperature may be exceeded or the integrity of the regulator will be compromised and the appliance
may make the user appliance operate at full load (100%) with all consequent effects.

•

The appliance must be stood vertically to encourage heat dissipation and to ensure there is a sufficient air
circulation and free space measuring
be grouped together on a single electric board, provide forced air circulation with a fan or cooling unit of
sufficient power.

•

Use the holes on the lower and power terminal board sides of the appliance, for entrance of the
connection cables. This will prevent water, dust etc. from getting in and will ensure the
level is maintained using adequately sized cables and sheaths of suitable quality.

Reassemble and check the cover of the external protection panel is properly closed.

•

DO NOT alter or damage the identification stickers on the equipment.

•

DO NOT force the trimmers to rotate beyond their set mechanical travel.

•

Only alter the trimmers intended for regulation.

•

Under no circumstances alter the trimmers marked with the spot of red paint.

•

must be obeyed

supply the regulator without the internal protection panel made from lexan.

touch the electrical parts of the circuit when the power supply is connected under any

’

filters are installed direc tly on the regulat or supp ly.

when installing the regulator :

150 mm

above and below the regulator. If several regulators are to

IP55

protection

WARNING !

HIGH LEAKAGE CURRENT: first connect to earth !

RGF 300

3/53

1.0 P

RESENTATION

1.1 D

1.2 I

1.3 P

1.4 E

1.5

2.0 E

LECTRICAL CONNECTIONS

2.1 E

2.2 E

2.3 E

3.0 C

OMMISSIONING PROCEDURE

3.1 J

3.2 M

3.3 M

3.4 S

3.5 S

3.6 M

3.7 O

4.0 C

ONTROL TRIMMER

4.1 M

4.2 M

4.3 C

4.4 P

4.5 S

4.6 S

4.7 M

5.0 HELP

6.0

RGF

300

7.0

8.0 L

9.0 D

TROUBLESHOOTING

IABILITY AND RESIDUAL RISKS

ISCLAIMER

CONTENTS

……………………………………………………..….……………………………

ESCRIPTION

NSTALLATION AND MACHANICAL DIMENSIONS

RINCIPLE OF OP ERATION

1.3.1 O

1.3.2 A

LECTRIC MOTORS

1.4.1 M

RGF

300

LECTRICAL CONNECTIONS, POWER CARD
LECTRICAL CONNECTIONS, ANALOGUE INPUT SIGNALS

2.2.1 C

2.2.2 C

2.2.3 C

2.2.4 R

2.2.5 C

LECTRICAL CONNECTIONS

2.3.1 O

UMPERS

ASTER, VERSION

ASTER, VERSION
LAVE, VERSION
LAVE, VERSION

ASTER, VERSION X OR

PTIONAL MODULE FOR DOUBLE SET-POINT CONFIGURATION

AX

. O

IN

. O

UT-OFF REGULATION

ROPORTIONAL BAND REGULATION

4.4.1 V

4.4.2 V

ET-POINT RE GULATION (MODELS

4.5.1 D

OFT-START REGULATION

ANUAL REGULATION (HEAT-PUMP

I

ORTABLE DISPLAY UNIT

– P

EASY REFERENCE COMMISSIONING GUIDE

……………………………….……………………………………………………………

………………………………………………………………………………..

……………………………………………..

……………………………………………………………………

PERATING MODE
PPLICATION

…………………………………………………………………

……………………………………………………………………….

…………………………………………………………………………..

AGNETOTHERMAL PROTECTION

TECHNICAL DATA

….……………………………………………………………….

……..……………………………………………

…………………………………………………………………………

……..…………………………………………….

……...……………………………..

ONNECTION OF
ONNECTION OF
ONNECTION OF OTHER SENSORS AND CONTROL SIGNALS
EMOTE CONNECTION FOE A CURRENT (M
ONNECTION OF THE RGF

PERATING SELECTION

PRESSURE TRANSDUCERS

XSK

TEMPERATURE SENSORS

NTC

……………………………………

…………………………………….

………………………….

OR VOLTAGE (VDC) CONTROL SIGNAL

A)

MULTIDRIVER

FF INPUTS / OUTPUT

, ON-O

INPUTS / OUTPUT

………………………

………………………………………

………………………………………………………………

…………….…………………………………………………………

……………………………………………………………………………………..

M (4-20mA),

V (0-10VDC),
M (0-20mA),
V (0-10VDC),

Y (NTC °C),

FOR 1 OR 2 CONTROL

FOR 1 OR 2 CONTROL

FOR 1 OR 2 CONTROL

FOR 1 OR 2 CONTROL

FOR 1 OR 2 CONTROL

INPUTS ……………………………

INPUTS ……………………………

INPUTS ………………..………..….

INPUTS ……………………………..

INPUTS …………….………..

(SP1-SP2) …………….…...

…………………………………………………………………………………

UTPUT REGULATION

UTPUT R

………………………………..… T

………………….. T

………………..……..…. T

……..……... T

ERSIONS WITH
ERSIONS WITH

MASTER
SLAVE

REGULATOR OPERATION

REGULATOR OPERATION

M, V, X, Y) … T

ECADIC SET-POINT OPTION (MOD

………………...……. T

) ..………... T

. M, V, X, Y) P3 ………………………………..

RIMMER

RIMMER
RIMMER

RIMMER

RIMMER

RIMMER

RIMMER

P4 …………………………….

P5 ……………………………
P6 ……………………………

P2 ……………………………

………………………………

……………………………….

P3 …………………………..

P1 ….……………………….

P7 …………………………..

…………………………………………………………………

………………………………………………..

. . . ………………………………….…………………………………………....

……………………………….………………………………………

.

RGF 300

4/53

1.0 P

HANK YOU

T

RESENTATION

for choosing an

rgf300

series three phase voltage regulator, designed specifically to give the
maximum yield and greatest ease of use.
Like all our products, it has been built to the very highest quality standards using electronic components of
the utmost reliability which have undergone functional tests that guarantee use of the product for at least

30,000 hours

rgf300

The

of continuous operation without problem.

regulator is a power unit designed to meet requirements of quality and flexibility of use in plants
and machines in which proportional variation of the speed of rotation of the fans is essential.
The regulator is housed in a
during ordinary use (

120°C

GEWISS GW Plast

), increased mechanical impact resistance (

120°C



case (

fig. 1

) which guarantees high heat resistance

IK = 08

) and a protection level (

IP55

that allows the regulator to be installed out of doors.
Inside the case there is a lexan protection panel displaying instructions for use and commissioning of the

rgf300

The

.

12A rgf300

Vdc

mA

NTC

is shown in

fig. 1.

fig. 1

Before installing the device, you are invited to read this manual which describes the necessary

procedures for correct installation and commissioning of the machine.

)

rgf300

RGF 300

5/53

Like all our products, the
subsequent modification
Since all these products are not used as "
machines, the standards' compatibility test was carried out under typical operating conditions.
The essential requirements of the directive are satisfied by conformity to "
industry.

rgf300

EEC/92/31

series bears CE marking as required by directive

on electromagnetic compatibility.

stand alone

" appliances but incorporated into other plants or

generic standards

3

89/336/ECC

IP 55

120°C

STOCK & WORK

- 20

°C

+85

°C

UR%

and its

" for heavy

- 20
+50

EN 50081-2

EN 55011
EN 55011
ENV 50140 (IEC 801-3)
ENV 50141
IEC 801-4
IEC 801-2

The tests and checks for conformity have been carried out according to the procedures described in the
product's technical documentation. The system used was formed by an
cable and relative controls, a power supply cable, a motor cable and a fan.

Responsibility for the f inal characteri stics of the syste m or plant rega rd ing th e EMC directiv e
rests with the installer. The equipment must be install ed in observance of the regulation s in
force using the information presented in this manual.

emission standard,

EN 50082-2

class B, for radiated disturbances
class A, for conducted disturbances
for susceptibility (on the power supply)
for conducted susceptibility on power lines
for fast transistors (bursts / high frequency disturbances)
for electrostatic discharge (

immunity standard, and in particular:

ESD

)

rgf300

fig. 2

voltage r egulator , a contr ol

RGF 300

6/53

Fig. 3

represent the

22

1

2

3

4

5

6

7

rgf300

regulator with the general contents

21

20

19

8

9

10

fig. 3

18

17

16
15

14

13
12

11

CONTENTS of rgf300 regulator

Control Trimmer for work parameters regulation

1.

Reference table for Set-point rotary centesimal switch

3.

Terminal block for analog inputs/output signals

5.

Power card (lower)

7.

Terminal block for PE connection

9.

SURGE ARRESTER circuit / PE faston connection

11.

I

CN2 connector for HELP

13.

Control Trimmer for Manual mode (heat-pump) regulation

15.

Characteristic with function parameters

17.

Macrolon cover of the case

19.

Black anodized heat sink

21.

display unit

Double 10 positions rotary switch for Set-point (optional)

2.

Lexan internal panel for protection against direct contact

4.

Control card (upper)

6.

Terminal block for load connection (U-V-W)

8.

Terminal block for threephase power supply (R-S-T)

10.

SURGE ARRESTER

12.

Terminal block ON-OFF auxilary inputs/output sig nals

14.

Status LED

16.

Cover screws

18.

20.

GEWISS GW Plast  120°C case
Screws hole for wall installation

22.

circuit like EN 61000-4-5

RGF 300

7/53

1.1 DESCRIPTION

rgf300

The
mounted inside the
The two cards represent the

series three-phase cutting regulators comprises two electronic cards on a vetronite support

GEWISS IP55 GW Plast

control

SP1

0

9

1

2

8

3

7

4

6

5

SW1 SW2 SW3 SW4

SP1

CN3

RGFPB10640

(OPTIONAL)

MA

control card

The

•

trimmers

!"

centesimal switch

•

relay

•

Leds
AC LINE ALARM
T.K. ALARM
RL1 ON
MANUAL

•

jumpers

•

flat cable

CN2

•

•

Inputs/output
signals terminal
boards

power card

The

•

power supply
terminal boards

contains the following regulation, connection and signalling components:

Marked "Pn"; used to set working parameters
Marked “SW”; used for the
on the transducer skale (only with
Marked "
Relay with commutation contact for external signalling of correct operation or
stop (see selection jumper
Marked "

RED Led DL1
RED Led DL2
GREEN Led DL3
YELLOW Led DL4

Marked
Marked
The flat allows connection to the control and power cards.
Check the flat is securely fixed during maintenance or commissioning.
Rapid connector to the portable
parameters

Terminal board MA
Terminal board MB

contains the following connection components:

'M1'

for three-phase input supply

'M2'

for three-phase output

‘M3’

120°C



section (upper) and

case.

power

section (lower).

P1

Mm MmMm

0

9

9

1

2

8

8

3

7

7

4

6

6

5

P3

J16

0

5

1

4

SP2

1
2

P2

2
3

7

P4

SP2

0

9

8

6

5

P3

1

J1

2

1

2
3

4

1 2

1
2
3

J8 J10

J9

1

J17

2

P6

P5

P1

1

2
3
4
5
1

2
1

2

P7

Mm

= soft-start

P2 Proportional Band

=

P3 Set-Point

=

P4

= max. output

P5

= min. output

P6

= cut-off

P7

= Set- H.P. mode

ALARM

ALARM

T.K .

AC LINE

1

J13

2

J15

MmMm

Mm

1

J2

2

1

J3

2

J4

J6

J5

J5

J7

1

J12

2

J11

MANUAL

CN 2

M2 M3 M1

fig. 4

simply

RL1"

J14

Dln"

to signal "regulator stop/fault"
to signal "external heat protection (

to signal commutation relay

to signal

'Jn'

; used to change preset operational modes

'FL'

for connection of the control analogue input signals

for connection of the ON-OFF inputs and outputs

U, V, W

for the

Earth / PE

connection

Set-Point parameter, with

PB 1064

).

HEAT PUMP

“

R,S,T

I

HELP

FL

RL1

ON

RL1

J14

1
2
3

1
2

MB

option)

T.K

)."

RL1

”

mode

10

unit for display of the

in the

N.O.

100

working po int s

position

rgf300

's wor k

RGF 300

8/53

1.2 INSTALLATION AND MECHANICAL DIMENSIONS

rgf300

The
the side fins before connecting to the power supply.
The holes provided on the lower part of the regulator are for entry of the electric connection cables:

•

four pole line (

•

four pole line (

•

signal cable lines for the analogue inputs and digital outputs.

To make installation simpler, all regulators are also fitted with stuffing boxes in

IP68

The regulator is cooled by natural convection and so air must be able to pass freely below and above the
appliance.
Therefore ensure there is at least

regulator must always be securely assembled and fixed using the four (4) attachment screws on

three phase + Earth
three phase + Earth

) to power the regulator,
) to power the load,

PA6

polyamide, class V2,

, for use with the power and signal cables.

150 mm.

of free space above and below the regulator.

AC LINE

HELPi U NIT Heat - Pu mp

ALARM

ALARM

RL1ONT.K.

fig. 5

Mechanical Dimensions

MODELS A B C D E F kg.

rgf 312
rgf 320
rgf 325
rgf 340
rgf 360

286 201 130 255 181 255 4.0
351 237 181 317 185 320 5.5
351 237 201 317 172 320 8.0
416 318 178 397 275 385 11.0
460 318 228 397 260 410 17.0

Fixing

∅∅∅∅

screw holes

∅ 6
∅ 6
∅ 6
∅ 6
∅ 8

RGF 300

9/53

Table 1

RGF 300

10/53

1.3 PRINCIPLE OF OPERATION

rgf300

The

series appliances are voltage regulators that use the phase cutting principle totally controlled over
three phases.
The regulators, also referred to as speed controls, have been designed to change the average voltage on the
following types of equipment, according to a control signal:

•

asynchronous three phase motors connected to

•

electrical resistor device s with sec tio ned

fans, pumps, agitators, mixers

single / three phase

.

;

Regulation occurs as a result of cutting of the input sinusoid. Regulation does not generate any torque knock
or pulsation and is particularly quiet. Any voltage loss is contained within a maximum limit of 1%.

Fig. 6

shows a block diagram of regulator

rgf300

.

CONTROL CIRCUIT

POWER CIRCUIT

C

E

A

B

T
S
R
PE

A - Power circuit
B - Mains filter and EMC
protective devices
C - Power supply and synchronism
signals
D - Insulators for the control
signals of the power devices
E - Regulation and control circuit
F – Modulator for control of the

PE

F

D

fig. 6

W
V
U

power devices

The speed regulators are sized to withstand a starting current equal to more than twice the rated current;
therefore, when choosing a regulator, it is essential to take into consideration both the motor starting current
and the type of motor.
It is actually well-known that, while the starting current in axial fans is equal to 2 or 3 times the rated current,
the same current in centrifugal fans can have values around 7 or 8 times the rated current.
As far as the choice of motor is concerned, it is advisable to choose motors suited to the type of regulation.
As a general rule, the best suited are:

motors with high slipping resistive motors

•

defluxed motors

•

tropicalised motors

•

CLASS H motors

•

as these allow better performance to be obtained with speed changes, they are quieter and start with lower
current.

When choosing a motor, it is always advisable to contact your own supplier and order a motor which is
suitable for speed control by voltage change. Subsequently, practical trials should be carried out on the
motors or prototype machines in order to check their correct operation.

After choosing the motor, the speed regulator must be ordered according to

•

•

rated voltage

the

maximum power

,

required (load-Amperes) bearing in mind the

starting current

.

RGF 300

11/53

After the motor characteristics have been checked, the following should be defined in order to identify the
type of operating mode and application.

1.3.1 Operating mode

rgf

The

•

controls allow two different types of operation depending on which type of input is available:

operation as

REGULATOR

(also called MASTER)

the phase cutting regulators is directly connected to one or more sensors; the phase cutting is a function of
the values selected for:

Set-Point P3

#"

Proportional band P2

#"

operation as

•

In this case, the
of the voltage by sending the control signal to the slave.

The incoming control signal to the

MASTER (mA – Vdc)

For a

MASTER (ohm)

For a

SLAVE (mA – Vdc)

For a

1.3.2 Application

It is generally possible to connect one or two sensors/control signals to all ‘

(trimmer or centesimal switch)

(trimmer)

POWER UNIT

rgf

is set up to be controlled by an external Master regulator which decides the phase cutting

(also called SLAVE)

rgf300

Active sensors with control in current (mA) or voltage (

Control signals in current (mA) or voltage (

regulators can be:

NTC

sensors with control in

°C/ohm ( 10 kohm @ 25 °C )

Vdc

)

MASTER’

and

Vdc

‘SLAVE’

)

models; with two (2) sensors-signals connected, the regulator automatically selects the greater or lesser
signal.
In the case of active sensors, this can be directly powered (
The principal applications are for measuring pressure (

cu.m/h

(

), superpressure (

mm.

), static pressure (Pa), supertemperature (

24Vdc / max. 40 mA

bar

), temperature (°C), humidity (

).

destratification

%RH

), delivery

) etc. i n plants and

machines.

MASTER SLAVE

fig. 7

RGF 300

12/53

1.4 ELECTRIC MOTORS

Three phase asynchronous motors can be connected to the

rgf300

regulator in applications where the torque­motor speed characteristic is quadratic.
This mainly allows phase cutting application with axial and centrifugal fans used for control purposes.
The correct electrical connection and the supply voltage are given on the motor's specifications plate.
The sense of rotation of the motor can be altered by swapping the connections of two of the three supply
cables.
It is important to keep the motor power supply cable as short as possible to reduce the level of interference
and leakage currents to a minimum

(10 / 15 mt)

; if the cable has to be long, an auxiliary three-phase filter of
exactly the same power as the regulator must be installed on the regulator output.
The figure below shows the star and delta connection configurations.

U V W

Z X Y

ST AR CONNECTION DELT A CONNECTION

U V W

Z X Y

fig. 8

rgf300

The
current must never exceed the rated current as given on the

regulator can control several motors connected in parallel but the absorption of the motors' total

rgf300

's specification plate.
The speeds of the motors vary at the same time though any differences in behaviour during start up and at
low speeds are due to slight differences between the motors even if they are of the same type. However, if
the required speeds of the motors are different, motors must be used with different rated speeds. Bear in
mind though that motors with very different characteristics create different electrical situations and these
may cause problems on start up and at low speeds caused by different resistances of the stators which require
different voltages on start up and at low speeds.

1.4.1 Magnetothermal protection

rgf300
Installation of magnetothermal protections is the responsibility of the installer

devices must be protected by a magnetothermal switch fitted upstream of the cutting regulators.

.
It is advisable to fit an automatic magnetothermal protection with a 'C' intervention curve having the
following capacity:

magnetothermal

RGF 300 models

carrying capacity

rgf 312 20 A
rgf 320 30 A
rgf 325 36 A
rgf 340 60 A
rgf 360 80 A

Table 2

RGF 300

13/53

1.5 rgf 300 TECHNICAL C

Voltage

UPPLY

S

Frequency
Overvoltage protection for installation Category II (

URRENT

C

Rated

Overload
Control circuits

OWER

P

O

PRINCIPLE

PERATING

Thermally dissipated

Totally controlled three-phase cutting, with compensation for inductive loads and motors, without need for
connection to NEUTRAL

POWER unit

M , V

PERATING

O

CHARACTERISTIC

(Vers.

)

Regulator

M , V , X , Y

(Vers.

Vers. M Two
Vers. V Two

Vers.

NPUT

I

SIGNALS

Control

Heat protection
Start/Stop
Automatic/Manual
Set-Point 1 / Set-Point 2

Transducer supply

UTPUT SIGNALS

O

Potentiometer supply Two
Auxiliary control

RL1

service relay

Version & Input M: 0-20 mA V: 0-10 Vdc X: +10/+60°C Y: -20/+20°C

Target value

DJUSTMENTS

A

AND

RESETTINGS

P

Proportional range
Minimum limit / Cut-Off Adjustable from
Maximum limit Adjustable from
Acceleration ramp Adjustable from 1” to
Direct/Reverse presetting Action mode of input prevailing over output :
Prevailing input presetting Selection mode for prevailing input :

INE ALARM

LED

SIGNALLING

AC L

LARM

T.K. A
RL1 ON Green

ANUAL MODE

M

ON Red

ON Red

ON Yellow

HARACTERISTICS

420V
50 Hz (60 Hz

RGF 312
RGF 320
RGF 325
RGF 340
RGF 360
200%
10VA
RGF 312 72 W @ 12A
RGF 320 120 W @ 20A
RGF 325 150 W @ 20A
RGF 340 240 W @ 40A
RGF 360 360 W @ 60A

The output voltage depends on the control signal prevailing between the
two available at the inputs, which is chosen by means of the pre­established mode, according to the specific appliance regulating curve.
The action can be :

DIRECT
REVERSE

Standard Config.

The output voltage changes to keep set to the target point, selected with
the Set-Point, the quantity measured by the transducer prevailing
between the two available at the inputs, which is chosen by means of the

)

X, Y

pre-established mode (greater or lesser in value).
The action mode, either
the controlled quantity, transducer characteristic and load action.

Standard

Two

25°C)
O
O
O
O

Two
from short circuit

0-10V / 1 mA
NO/NC

of :

Signals locked state due to absence of one supply phase
Signals locked state due to motor thermal protection NC contact opening
Signals
Signals “

AC

+/- 10 %

three-phase (

)

4 KV
12 A
20 A
25 A
40 A
60 A

up to
up to
up to
up to
up to

50°C

environment, over decrease by

50°C

environment, over decrease by

50°C

environment, over decrease by

50°C

environment, over decrease by

50°C

environment, over decrease by

of the rated current (max.

, with the output increasing as the input increases, or

,

with the output decreasing as the input increases.

: output increasing as the controlled variable increases

direct

: output increasing as the controlled variable increases

0-20 mA, Ri = 100 hom

analog inputs, priority to the greater std.

0-10 Vdc, Ri = 10 khom
kohm

analog inputs for the

, priority to the hottest sensor std.

N/OFF

input, motor protection NC thermal contact

N/OFF
N/OFF
N/OFF

: Off Vin=0 =

input

Off (Vin=0) =

input:

Start /

input for Set-point 1/2 commutation (Only with

+22Vdc (-10% / +20%) 40 mA

+10Vdc / 5 mA

stabilized outputs

analog output for cascade control of other

relay contact, free from potential, for separate or joint signalling

alarm signals absent / start enabling / voltage supply

0 ... 20 mA 0 … 10 Vdc +10 ... +60 °C -20 ... +20 °C

0.4 … 4 mA 0.3 … 3.5 Vdc 3 … 30 °C
0%

to

100%

100% to 0%

10”

RL1

service relay energised state

ANUAL

M

” operation state at fixed speed

230V

AC

and

500V

AC

on request)

)

0.6 A/°C

1.0 A/°C

1.2 A/°C

1.8 A/°C

2.5 A/°C

10”

every 3’)

reverse,

or

is chosen in consideration of

analog inputs, priority to the greater std.

NTC

sensors supplied (

N

O

(

Automatic /

IN

=24V

V

N

IN

O

V

(

) : Stop

=24V

)=Manual

10KΩΩΩΩ @

PB1064

)

non-stabilised outputs, protected

SLAVE

units

greater

Direct or Reverse

smaller

/

RGF 300

14/53

ROTECTIONS

P

ASE

C

NSULATION

I

EMPERATURE

T

UMIDITY

H

NSTALLATION

I

LECTRICAL

E

CONNECTIONS

ECHNICAL

T

STANDARDS

RH < 85%

Continually checks presence of the three mains phases; when one phase

Mains surveillance

EMC integrated

mains filter

Overvoltage protection According to

is absent, it stops the appliance and switches on the “phase absent” alarm
signal LED (
According to

ISM

appliances directly connected to low voltage power mains

AC LINE ALARM

EN 55011 (CEI 110-6

EN 61000-4-5
RGF 312 286 x 201 x 130 mm 4.0 kg
RGF 320 351 x 237 x 181 mm 5.5 kg

Dimensions and Weight

RGF 325 351 x 237 x 201 mm 8.0 kg
RGF 340 416 x 318 x 178 mm 11.0 kg
RGF 360 460 x 318 x 220 mm

Materials
Degree of protection

GW-Plast 120°C
IP 55

and black anodised aluminium

Environmental pollution Strong pollution
Fire resistance Category D

Case Class
Control circuits
Working
Storing

Vertical wall-mounting only, with

SIGNAL

RGF 312

POWER

RGF 320
RGF 325
RGF 340
RGF 360

89/392/EEC
73/23/EEC

Directive

Directive

I

(use of earthed protection cable)

4000V

between control input and mains voltage components

-20 T 50

-30 T 85

N° 4

(from –20°C to + 50°C)
(from –30°C to + 85°C)

∅∅∅∅ 6

mm. holes (RGF350 with
Trailing cable with rated cross section
Trailing cable with rated cross section
Trailing cable with rated cross section
Trailing cable with rated cross section
Trailing cable with rated cross section
Trailing cable with rated cross section

CEI-EN 60204-1

: “ Safety of machinery”

(93/68)

89/336/EEC

Directive

EN 50081-2
EN 50082-2
EN 55011
EN 55011
ENV 50140 (IEC 801-3
ENV 50141
IEC 801-4
IEC 801-2

Generic standard for industrial environment emission

Generic standard for industrial environment immunity
class B, for radiated disturbance
class B, for conducted disturbance

for conducted susceptibility on the signal lines
for fast transients (burst / high-frequency disturbance)
for electrostatic discharge (

Table 3

)

) Class B:

: overvoltage Category

II (4 KV)

17.0 kg

N° 4 ∅∅∅∅ 8

slotted holes)

1.5 sq mm / 22-14 AWG Cu

2.5 sq mm / 20-12 AWG Cu

4.0 sq mm/ 24-10 AWG Cu
10 sq mm / 20-6 AWG Cu
10 sq mm / 20-6 AWG Cu
10 sq mm / 20-6 AWG Cu

) for susceptibility (on the supply)

ESD

)

RGF 300

15/53

2.0 ELECTRICAL CONNECTIONS

2.1 POWER CARD ELECTRICAL CONNECTIONS

For supply and load connection, reference should be made to the diagrams shown in
section of the cables is adequate to the connected load .
The power cables (supply and load) must be installed separately from the control cables (analogue inputs and
ON-OFF inputs/outputs) keeping the maximum distance possible between the conductors.

Do not place power cables with signal cables in the same raceway. If the cables cross one another,
ensure it is at 90°.

ATTENTION : connect the earth conductor to the screw placed purposely beside the dissipator. Use
heat resistant cables able to withstand temperatures greater than 90°C.

SURGE ARRESTER : electric protection placed between the regulator supply and the earth to protect
the device from transitory mains excess voltage.
ATTENTION : disconnect the PE faston contact from the earth reference, in the '

STRENGTH TEST

’.

The

rgf300

regulators allows connection of three-phase loads

without requiring connec tion of the

This simplifies installation and facilitates the star or delta load configuration.
It is advisable to provide a by-pass switch to allow load activation even when the cutting regulators is faulty

emergency by-pass

(

).

When connecting the by-pass, the following precautions should be taken into consideration:
i) connection made through the by-pass switch must keep phase correspondence unaltered so as to

avoid destructive shortcircuits and maintain the motor's sense of rotation.
ii) before supplying the load with maximum voltage, supply to the regulator should be disconnected,
therefore:

it is advisable to use a three-position manual switch as a commutation device

••••

if automatic commutation is carried out by means of contactors, make sure there is some delay (at

••••

least 2 seconds) between regulator disconnection and load activation operations.

Electrical connection of the supply and load,
for

rgf300

regulators is shown in

BY-PASS

fig. 9

U V W PE R S T

PE
L1
L2
L3

fig. 8,

makin g sur e the

ELECTRIC

NEUTRAL

.

RGF 300

16/53

fig. 9

RGF 300

17/53