14
3.11.
Connecting The Remote
Control Unit
Remote control options for various functions are provided
with the connection ”REMOTE” on the TC 750 via the 15 pole
D-Sub connector. Shielded cable must be used. Shielding is
on the plug side of the TC 750 connected to the TC 750 casing.
The inputs 2 - 6 are activated by connecting them to the + 24V
on pin 1 (active high) (please see Section 3.13. Connections
Diagram).
Pin Arrangement And Remote Plug Functions
(please see following table)
1
8
9
15
Pin occupancy remote plug
P
Piin
n o
oc
cc
cu
up
pa
an
nc
cyy a
an
nd
d rre
em
mo
otte
e p
pllu
ug
g ffu
un
nc
cttiio
on
nss
P
Piin
n n
nrr..
IIn
np
pu
utt o
op
pe
en
n ((llo
ow
w))
IIn
np
pu
utt c
cllo
osse
ed
d ((h
hiig
gh
h)) o
on
n +
+ 2244V
V ((p
piin
n 11))
1
+24 V
2
venting blocked (see Section 3.9.)
venting released (see Section 3.9.)
3
motor, turbopump off
motor, turbopump on:
the turbopump is driven, current flows through the motor coils
4
pumping station off
pumping station on:
the turbopump is driven, backing pump is started via the relay box
5
heating off
heating on:
the heating is switched on once the rotation speed switchpoint is attained and off
when the rotation speed switchpoint is unattained
optional: Sealing gas valve off1)
optional: Sealing gas valve on1)
5
reset:
by supplying a pulse (T < 2s) with an amplitude of 24 V a malfunction
acknowledgement can be processed
6
standby off
standby on:
pump is accelerated to 66% of its nominal rotation speed
7
rotation speed setting mode off
the rotation speed can be changed by feeding a PWM signal to this pin or
via Serial Interface RS 485 (see Section 4.9. ”Rotation Speed Setting Mode”)
8
O
Ou
uttp
pu
utt ((llo
ow
w))
O
Ou
uttp
pu
utt ((h
hiig
gh
h))
rotation speed switchpoint not attained
rotation speed switchpoint attained;
output can be loaded with 24 V/50 mA
9
O
Ou
uttp
pu
utt ((llo
ow
w))
O
Ou
uttp
pu
utt ((h
hiig
gh
h))
Collective malfunction message
malfunction-free operations;
output can be loaded with 24 V/50 mA
10
Mass (ground)
____________
11
Contact
Output 1: Switchpoint attained
contact 2) between pin 11 and pin 12 closed
if the turbopump is above the rotation speed switchpoint
12
Contact
Output 1: Switchpoint attained
13
Contact
Output 2: Collective malfunction message
contact 2) between pin 13 and pin 14 open in the event of a collective malfunction
14
Contact
Output 2: Collective malfunction message
15
Analog output
rotation speed proportional output voltage 0 - 10 VDC =
0 - 100 % * fend/load R
≥
10 k
Ω
1) The option must be set via the Serial Interface RS 485
(see Operating Instructions PM 0547 BN, Pumping operations with DCU)
2) The following technical data is applicable for the contacts:
U max = 50 VDC
I max = 1 A
When connecting supply voltage, the turbopump
is started.
O
On
n d
de
elliivve
erryy::
P
Piin
n 11,, P
Piin
n 22,, P
Piin
n 33 a
an
nd
d P
Piin
n 44 a
arre
e b
brriid
dg
ge
ed
d iin
n tth
he
e
m
ma
attiin
ng
g p
pllu
ug
g.
CAUTION
