User manual

15
ENG
“UE BASIC” +0300042EE - rel. 1.0 - 02.12.2009
HUMIDISTAT and REMOTE CONTACT (ON/OFF action):
connect inputs M2.2 and M2.3 (production request) to a humidistat;
•
connect inputs M2.4 and M2.5 (enable) to a remote contact (e.g.: •
switch, timer,…);
set parameter A0=0 to enable the ON/OFF action.•
M.2.1
M.2.2 M.2.3 M2.4 M.2.5 M.2.6 M.2.7
Fig. 4.e
2. Enable and control steam production using:
PROPORTIONAL EXTERNAL CONTROLLER (modulating action)
jumper inputs M2.4 and M2.5 (enable);•
connect outputs M2.2 and M2.3 (production request) to an external •
controller;
iset parameter A0=1 to enable the modulating action (see chap. 7) and •
parameter A2 depending on the signal chosen (0 to 10 V, 2 to 10V,
0..20mA, 4 to 20 mA) (see chap. 7).
M.2.1
M.2.2 M.2.3 M2.4 M.2.5 M.2.6 M.2.7
OUT
REF
Fig. 4.f
PROPORTIONAL EXTERNAL CONTROLLER and REMOTE CONTACT
(modulating action)
connect inputs M2.4 and M2.5 to a remote contact (enable)•
connect outputs M2.2 and M2.3 (request) to an external controller •
set parameter A0=1 to enable the modulating action (see chap. 7) and •
parameter A2 depending on the signal chosen (0 to 10 V, 2 to 10V,
0…20V, 4 to 20 mA) (see chap. 7).
M.2.1
M.2.2 M.2.3 M2.4 M.2.5 M.2.6 M.2.7
OUT
REF
Fig. 4.g
Note: in industrial environments (IEC EN61000-6-2) the signal
cables running from the unit must not exceed 10 m (33 ft)
(1)
in
length: steam production signal cable (terminals M2.1...M2.3), remote on/
o input (terminals M2.4...M2.5) and cable shields for RS485
communication.
4.4 Alarm contact (M5.1 - M5.2)
Contact available for the remote signalling of one or more alarms.
M.5.1M.5.2
Fig. 4.h
Electrical speci cations: 250 Vac; Imax: 2 A resistive 2 A inductive.
Note: use clamps on the relay terminal blocks (alarm, utilities) to
prevent the cables from being detached.
4.5 Auxiliary contact: production request
present, external fan control) (M14.1 - M14.3)
Relay contact that indicates the presence of the steam production
request. It can also be used to control an external fan (see chap. 12.7)
M.14.1 M.14.2
M.14.3
Electrical speci cations: 250 Vac; Imax: 8 A resistive 2 A inductive.
Final checks
The following conditions represent correct electrical connection:
the rated voltage of the appliance corresponds to the rated supply □
voltage;
the fuses installed are suitable for the line and the power supply □
voltage;
a mains disconnect switch has been installed to disconnect power to □
the humidi er when required;
the humidi er has been correctly earthed; □
the power cable is fastened using the tear-proof cable gland; □
terminals M2.4 and M2.5 are jumpered or connected to an enable- □
operation contact;
if the humidi er is controlled by an external control device, the earth □
of the signal is electrically connected to the controller earth.