6
VCS – Viscosity Controller
Measuring inputs / ranges:
ai1:
Pt100 or standard signal, range 0 to 400°C resp. adjustable, preadjustment 4 to 20 mA / 0
to 50 cSt
ai2:
Pt100 or standard signal, range 0...400°C resp. adjustable, preadjustment 4 to 20 mA / 0
to 200 °C
ai3:
VC622/722 only
Remote resistance transmitter or standard signal preadjustment 4 to 20mA / 0 to 100 %
Binary input:
VC322/622/722
2 binary inputs, external voltage 0/24 VDC or potential free contact
0 V resp. contact open: status = 0;
24 V resp. contact closed: status = 1
b1: 0 = control channel 1 active; 1 = control channel 2 active
b2: 0 = continuous output(s) = 0%; 1 = auto. control
Relay output:
VC312
3 relays with potential-free changeover contacts incl. spark extinction, switch. power
250V 2A, preadjusted.:
K1 - Control function three point step (+)
K2 - Control function three point step (-)
K3 & K4 – Common relay switched by limit comparator assigned to actual value 1&2
VC322
4 relays with potential-free changeover contacts incl. spark extinction, switch. power
250V 2A, preadj.:
K1 - Control function three point step (+)
K2 - Control function three point step (-)
K3 - Relay switched by limit comparator assigned to actual value 1
K4 - Relay switched by limit comparator assigned to actual value 2
VC622/722
K1 – Relay switched by limit comparator assigned to actual value 1
K2 - Relay switched by limit comparator assigned to actual value 2
K3 -
K4 -
Analogue
outputs
4 signal- / continuous outputs 0/4..20 mA, galvanically isolated, preadjustment:
VC312
VC322
VC622
VC722
S1:
Actual value 1 Actual value 1 Continuous Y1 Continuous Y1
S2:
Actual value 2 Actual value 2 Actual value 1 Continuous Y2
S3:
Nil
Actual value 2
Actual value 1
S4:
Nil
Actual value 2
3.1.1
Planning
Topics covered in this chapter:
Installation checklist
Best practices
Power requirements
Other installation considerations
Recommended installations for the controller
Perform a pre-installation controller check
Summary of Contents for Viscosity VC312
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