Watson-Marlow Varmeca 30 - Manual (Page 22)

56
INSTALLATION AND MAINTENANCE
VARMECA 30
Variable speed motor or geared motor
CONNECTIONS
LEROY-SOMER 3776 en - 07.2007 / h
3.5.2.3 - 3-phase AC power supply in accordance with safety standard EN954-1 - category 2 or 3 with use of safety input
SDI2 redundantly with logic input DI2
QS: Fused isolator: QS must be opened before any intervention on the electrical parts of the drive or motor.
AU: Emergency stop button.
KA: Relays
Optional braking resistor. Dissipates the active power returned by the motor onto the drive DC bus in the event of a driving
machine.
Using the safety input means the motor can be stopped in freewheel mode without using a line contactor. The drive’s internal
principles are sufficiently safe to perform a stop using the safety input directly (category 1 of EN954-1).
Duplication of the stop command on a logic input enables use of the internal drive redundancy to perform a freewheel stop
(application of category 3 principles in accordance with EN954 for the part relating to the drive).
KA
KA
AU
QS
10V
ADI1
0V
ADIO3
0V
DI01
+24V
DI2
DI3
+24V
DI4
SDI1
SDI2
COM
RL10
SD01
SD02
L1
L2
L3
R+
R-
PE
KA
0-10 V/4-20 mA
speed reference
(local options or external ref.)
Motor PTC input
Local option
indication
External
fault input
Selection of
0-10 V/4-20 mA
speed reference
Forward/Stop
Reverse/Stop
Braking resistor
(optional)
Mains supply
VARMECA 33/34 (only)