52
Connecting an external ohmic limiter controller
LIMIT
IN GND
140Ω...10kΩ
A5
CONTROL
VOUT
X9
X8
IN GND
JP2 (24V)
JP1 (10V)
Control compartment
The signal cable of an ohmic limiter controller
(140Ω...10kΩ) is to be connected according to the
wiring diagram to the terminals "VOUT" (CONTROL
terminal) and "IN" and GND" (LIMIT terminal) on the
driver board in the control compartment.
The connecting cable must be led through a cable gland
into the control compartment.
Note: when connecting an ohmic limiter controller
Jumper "JP2" must be removed and Jumper "JP1" must
be connected on the driver board. The limiter must be
activated and limiter signal type must be set to 0-10V
in the control settings of the control software.
Connecting the optional remote operating and fault indication
Error Service Steam Unit On
F1 (100 mA)
H1
1 2 3 4 5 6 7 8 9 10
Control compartment
The optional remote operating and fault indication board
contains four potential-free relay contacts for the con-
nection of the following operating and fault indications:
– "Error" (Terminal 1 and 2):
This relay is activated if an error is present.
– "Service" (Terminal 4 and 5):
This relay is activated when the set maintenance
interval has elapsed.
Note: this relay can be configured in the control
software to close either when maintenance is re-
quired or when maintenance is required and when
a warning is indicated.
– "Steam" (Terminal 7 and 8):
This relay closes as soon as the Nordmann EL
humidifies.
– "Unit on" (Terminal 9 and 10):
This relay closes as soon as the voltage supply to
the Control compartment of the Nordmann EL is
switched on.
The connecting cable must be led through a cable gland
or grommet into the control compartment.
The
maximum contact loading
is
250V/8A
.
Appropriate suppressor modules are to be used for the
switching of relays and miniature contactors.
