INFICON Cygnus 2 Thin Film Deposition Controller - Manual (Page 47)

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Cygnus 2 Operating Manual
2.3.2.4 I/O Expansion Options
One I/O Relay module is included as standard equipment with the Cygnus 2 and is
used to interface with other machinery of the vacuum system. It can control
components such as heaters, rotators or shutters through its 8 relays. It can
respond to external instructions through its 14 isolated input lines. Standard
equipment provides 8 relays and 14 input lines. Optionally, this can be expanded
to 24 relays, 28 TTL inputs, and 14 open collector type outputs with the addition of
another Relay I/O module and a TTL Relay module having 8 relays and 14 TTL
open collector outputs.
The modules provide separate connectors for outputs and input lines. A 25-pin
D-sub, male connector is used for the eight relays. A 15-pin D-sub, male connector
is used for the input lines. Mating connectors are provided. Refer to
Figure 3-2 on
page 3-3 for connector locations and Table 2-3 on page 2-10 for connector pin
assignment. Relay connections are rated at 30 V (dc) or 30 V (ac) RMS or
42 V (peak) maximum; 2.5 A maximum.
Inputs are activated by pulling the specific input terminal to ground (<0.8 V) through
a contact closure to common (GND) or with TTL/CMOS Logic having current sink
capability of 2 mA (1 low power TTL load).
WARNING - Risk Of Electric Shock
The relay, relay circuit, and associated pins in the I/O
connector(s) have a maximum voltage rating of 30 V (dc)
or 30 V (ac) RMS or 42 V (peak). The maximum current
rating per connector pin or relay contact is 2.5 Amps.