Installation
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300314330_002_C7 - 05/2021 - © Leybold
Control with I/Os
The DRYVAC can be controlled via digital inputs and outputs. To do so,
change the parameter b1-02 from 0 (RUN and STOP buttons) to 1 (digital
inputs), see Section 4.2 Interface Description.
SC = earth
Bridge SC and S1 to start the DRYVAC. The run-up time to nominal speed
(120 Hz) amounts to 200 seconds. Open SC and S1 to stop the DRYVAC.
Connect SC with S4 to reset an error message. Reset will not function as
long as the error message is active. In addition, the start signal must be set
to “0” before the reset.
To set a 2nd frequency see Section 4.4.4.
The SC (earth) terminal in the frequency converter is already occupied by a
ferrule. If you wish to control the pump per I/Os, use the supplied 5-conduc-
tor connector to ground the I/Os and the pump sensors on the I/O board of
the frequency converter, see Fig. 3.18.
You will find the 5-conductor connector in the PE bag of the operating
instructions.
Fig. 3.11 Control I/Os
S1 S2 S3 S4 S5 S6 HC SC H1 RP AC
R+ R– S+ S– IG T1 TC A2 +V AM AC MP
P1 P2 PC
ST
AR
T/STOP
RESET
2. Fr
equenz*
Schalter, SPS, Relais
Use the 5-conductor
connector at the SC clamp.
* see Section 4.4.4
for 2
nd
frequency
Switch, PLC, relay
2
nd
fr
equency*
DV 450/650 and 450/650-r
