West Control Solutions N8080 (for 1xxx) - Manual (Page 37)

A.3 DIGITAL INPUT (OPTION)
Type: Voltage-free or TTL-compatible operation.
May be connected to: External switch/relay contacts or
TTL-compatible logic signal.
Maximum Input delay
(open - closed or “1" - “0"
transition):
1 second
Minimum Input delay
(closed - open or “0" - “1"
transition):
1 second
External Switch/Relay Contacts
Maximum Contact
Resistance (Closure):
50
Minimum Contact
Resistance (Open):
5000
External TTL-Compatible Logic Signal
Maximum Voltage (TTL) for
“0”:
0.8V
Minimum Voltage (TTL) for
“0":
-0.6V
Minimum Voltage (TTL) for
“1":
2.0V
Maximum Voltage (TTL) for
“1":
24.0V
A.4 TRANSISTOR OUTPUTS
Type: NPN open collector. Output tied to Alarm 1,
Output 2 tied to Alarm 2.
A.5 RELAY 1 OUTPUT
Contact Type: Single pole double throw.
Rating: 5A resistive @ 120/240V AC
PM090-A Volume II A-3
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