Operating Instructions
REOTRON MEW
REO
UK LTD
6
ELEKTRONIK
ELEKTRONIK
ELEKTRONIK
ELEKTRONIK
3.1 Setpoint Input U
The value of the output voltage is determined by the setpoint input U. The setpoint can be provided in
the form of 0-10 V, 0-20mA, DC or with a 10k
Ω
Potentiometer. A +10V reference voltage is provided
for potentiometer operation.
With setpoint 4...20 mA, put the switch “S1/5” to “ON”.
3.2 Setpoint Input I
The strength of the output current is determined by the set point input "I". The setpoint can be provided
in the form of 0-10 V, 0-20mA, DC or with a 10k Potentiometer. A +10V reference voltage is provided
for potentiometer operation.
With setpoint 4...20 mA, put the switch “S1/5” to “ON”.
3.3 Enable (Regulator Inhibit)
A control voltage (12-24V DC) must be applied to terminals 9+ and 15-, to enable the unit, or a
connection made between terminals 9 and 10 by using a switch. A permanent link between terminals 9
and 10 is used for operation without an external enable. The firing pulses are inhibited whilst the
enable input is not closed.
3.4 Actual Voltage Output (Option)
A 0-10 V DC output signal is provided and this corresponds to the units momentary voltage output.
This generates 10V for 100% of the units possible output voltage (using the Umax set value).
3.5 Actual Current Output (Option)
A 0-10 V DC output signal is provided and this corresponds to the units momentary current output.
This generates 10V for 100% of the units possible output current (using the Imax set value).
3.6 Fault Indication
Relay changeover contacts are provided for indicating that there has been a unit fault.
The following fault conditions energise the relay and cause the unit to switch off:
Over temperature of the power unit
Mains
synchronisation
not
possible
A fault condition must be cancelled with the RESET push button.
4.0 Construction
The thyristor regulator unit is a completely wired, function tested, compact unit. The unit is designed
for panel mounting. The connections for the mains supply and load are brought out to screw terminals
and the control signals to plug-in screw terminals. The unit front panel incorporates the adjustment
components (trimmers, switch and light diodes) to display and control the operating conditions.
The fuses for protecting the semiconductors is built into the front panel are accessed by removing the
front panel.
With power regulation here the power setpoint is determined
(switch S1/6=ON)
With power regulation the actual power is given
instead of the actual voltage.
