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5.2 Connecting power supply
The power supply is connected in accordance with the figures and
technical data and must be connected for Thyro-2A and Thyro-3A to
a right rotating field in the power circuit. Thyro-1A must be connected
to U1 / U2
• Switch off mains supply and secure against accidentally being swit-
ched back on.
• Remove the cover.
• Ground the power controller
• Connect the load to connection terminals U2, V2, W2.
• Connect terminals U1, V1, W1 to the circuit breaker.
• Make any other necessary connections.
The electronics of the control device are supplied directly from the po-
wer unit (terminals U1, X1.1 and X1.2). This voltage is used simulta-
neously for mains synchronization. The mains connection is designed
for input voltages of U
47Hz to 63Hz. Both terminals (X1.1 and X1.2 1.5 mm
bridged internally. When connecting a phase to X1 a fused connec-
tion is necessary (see Tab. 11, page 60).
Exception: When an additional electronics supply is connected.
5.3 Connecting additional electronics supply
(only for ...H RL1 and ...H RLP1)
The thyristor power controller Thyro-A is equipped with an additio-
nal 24V AC/DC power supply input. (X11.1 and X11.2 1.5 mm
3.5).
If needed, e.g. when operating with a bus, or voltages below the to-
lerance (e.g. when operating a 500V Thyro-A at a 440V mains) the
control device can be supplied additionally with 24V AC or DC. The
24V voltage must be ungrounded (SELV) and must not be connected
to the control ground. However, several Thyro-A can be operated on
a 24V supply. The input is reverse polarity protected. The connection
output for the control device is circa 2W (5VA) per controller.
The 24V connection lines are to be fused in accordance with the ap-
plicable regulations. A soldered in fuse protects the device in case of
internal short-circuits.
-15% to +10% and nominal frequencies from
nom
62
, grid 3.5) are
2
, grid
2
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