RGF 300
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S1: AUT / MAN (MB 2 – MB 3 terminals)
S1 = OPEN operation with variable speed regulation (Led heat-pump = OFF)
S1 = CLOSED MANUAL operation at fixed speed (Led heat-pump = ON)
The S1 contact allows the regulation to be commutated from "AUTOMATIC OPERATION" (power
supplied according to the control signal) to "MANUAL OPERATION" with fixed supply power.
Activation of this function is displayed by the
heat-pump Led
lighting up.
Application example :
WINTER
/
SUMMER OPERATION
of heat pumps.
The fans, connected to the regulator, can be activated depending on the temperature or pressure detected; or,
by switching
S1= CLOSED
, voltage to the fans can be kept constant, equal to the value set with
P4 (100% -
0%)
, for the required time.
CALIBRATION
: switch the
S1
contact to
CLOSED (Led heat-pump = ON)
and regulate the position of
the
P7
trimmer to the desired voltage; then open
S1
(Led heat-pump = OFF)
.
This will reset the automatic speed regulation on the basis of the control signal.
The operation described here can be achieved by means of electromechanical devices. However it is
extremely simple if the cutting regulators is controlled by an external regulator (e.g. Energy Light - type
Eliwell
), which can automatically control the
S1
contact.
S2: STOP (MB 4 – MB 5 terminals)
S2 = OPEN Regulator operational
S2 = CLOSED Operation stop
With
S2
= CLOSED operation of the cutting regulators is stopped via a remote contact.
This is useful, for example, to stop fans during defrosting or to link fan operation to activation of a central
unit (e.g. compressor) or an alarm (e.g. max./min. temperature).
S3: SP1 / SP2 (MB 1 – MB 3 terminals)
S3 = OPEN Automatic regulator operation with SET-POINT 1
S3 = CLOSED Automatic regulator operation with SET-POINT 2
The
S3
contact allows the reference Set-point to be commutated from
SP1
to
SP2.
With
S3
= OPEN, the regulator works with
SET-POINT 1
.
With
S3
= CLOSED, the regulator works with
SET-POINT 2
.
Activation of this function is displayed by the
SP1
and
SP2
Leds lighting up on the optional
RGFPB10640
card.
This function is useful, for example, for day / night or winter / summer operations.
Selection is made by means of an external contact in automatic or manual commutation mode.
N.B. : this control is only operative if the optional RGFPB10640 card is present on the regulator.
TK: TK1 – TK2 (MB 6 – MB 7 terminals)
TK = CLOSED Regular operation (Led TK
ALARM
= OFF )
TK = OPEN Operation stop (Led TK
ALARM
= ON )
Intervention of an external safety device opens a
0 V
potential contact and halts operation of the regulator.
Led TK
ALARM
(ON)
is lighted up.
In plants with fans in parallel, individual protection devices must be used for each motor connected so as to
reduce the risk of a total stop.
To restore normal conditions (
RESET
), see the position of jumper
J13
.
For operation with
J15=2,
the configuration required is :
MB 6/7 = NC
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