Trolley Return Unit 920/1500
7
EN
Component Description Explanation/location
CR_BOX_2 3-button control box Emergency stop, Start button and a rotary switch Manual/Automatic
return.
CR_BOX_3 2-button control box Emergency stop and Start button.
Damper Motor Damper motor Closes extraction channel, and counteracts cold downdraft.
Fan Contactor Start apparatus for fan Start apparatus for fan with motor protection.
Trolley Suction trolley Trolley with a balance block, which runs inside the extraction
channel.
Current Collector Current collector Carbon brushes mounted on driving slot, connecting SLX with
control system through SLX3.
Bus Bar Bus bar
J1 Jumper Jumper for supplying galvanically separated relay with 24 VAC.
X1 Terminal block designation Network connection in Drive Unit.
X2 Terminal block designation Connection for cable W1 in Drive Unit.
X3 Terminal block designation Terminal block in connection box 1.
X4 Terminal block designation Terminal block in connection box 2.
X5 Terminal block designation Connections on the driving slot.
X6 Terminal block designation Terminal block in connection box 3.
Drive Unit Drive unit Complete unit containing the drive motor, control board, transformer,
gearbox, drive wheels, and so on.
K1 Contact Contact for the disconnection of the motor when the emergency stop
is activated.
K2 Relay Relay for galvanic separation of Fan Starters.
F Fuse 10 A time lag (T) Fuse in control board, 10 A time lag (T), fusing the drive motor.
F1 Fuse 2 A time lag (T) Fuse in terminal block X1, (2 or 4 A time lag (T) depending on
transformer voltage setting according to Circuit diagram 1), power
supply fusing of 24 V transformer.
F2 Fuse 2 A time lag (T) Fuse in terminal block X2, 2 A time lag (T), 24 VAC, fusing of 24 VAC
supply to Fan Contact.
T1 Transformer Power transformer 115/100V, 200/230V, 24V.
PCB1 Control board Printed circuit board, control board in drive unit.
PCB2 I/O card Printed circuit board, adjusts inputs to PCB1.
M Drive motor 24 VDC motor with gearbox for propulsion of the retrieve wire.
Driving slot Driving slot Mechanical safety coupling for interconnection of stop ball and
suction trolley.
Ball Stop ball Ball-shaped stop device mounted on the retrieve wire. Locks into
driving slot and pulls the suction trolley back to connection position.
Retrieve wire Retrieve wire The wire runs between drive wheel and idler pulley. Fitted on this is
the stop ball that is connected together with the driving slot.
Connection pos. Connection position When the driving slot is inserted in the connection arrow SLX1.
Disconnection pos. Disconnection position The disconnection position when the driving slot’s current collector
is connected with the bus bars. The disconnection zone is
approximately. 2.5 m at the exit point.
Transport pos. Transport position The transport position when the exhaust hose is in its uppermost
position and aects the limit position SLX.
