Atest Gaz Control V, User Manual

Page: 7 / 20

www.atestgaz.pl
4 Input-output interfaces
4.1 Electric interface
Figure 3: Electric Connections
Name Terminal Description
Valve power supply port. Parameters – see section 4.1.1
- Negative
+ Positive
INV. FAULT Relay output of the fault signal (inverted) – see details in Section 4.1.2
COM Common terminal of relay
NC Normally closed contact of relay
NO Normally open contact of relay
DI Binary input – details, see section 4.1.3
DI1 Input DI1
DI2 Input DI2
TETA BUS System communication port designed to connect devices of the Teta series, see
details in Section 4.1.4
When the unit is controlled exclusively via the DI line this port is used only for power
supply of the unit.
- Power supply and control line for Teta bus / negative
+ Power supply and control line for Teta bus / positive
Table 2: Electric interface description
4.1.1 Power supply port for a valve to be controlled
The output port designed to supply a shutoff valve. The port is monitored (resistance of the output line is
continuously measured) and its parameters are similar to the ones specified in Table 8.
4.1.2 Relay output of the fault signal
The output is active (COM and NO terminals are shorted) during faultless operation of the valve controller
(neither the controller nor the power supply line for the valve are defective).
The output is inactive (COM and NO terminals are open) when any faults are detected either in the valve
controller or the power supply line for the valve or power supply voltage is missing).
4.1.3 DI port
The port is designed for direct control of a shutoff valve by means of a signal that can be provided by
another system for automatic control, an alarm system or a pushbutton. Parameters – see Table 8.
s. 7|15
User Manual: POD-067-ENG R01
- + COM NC NO DI1 DI2 - +
INV. FAULT
DI TETA BUS