Omega Engineering OMB-CHARTSCAN 1400 User Manual page 30

Digital I/O Interface & Alarms
Installation Category:
•
CE: Category 1
Number of Digital Inputs:
•
8 bits, LS-TTL compatible.
Number of Digital Outputs:
•
32 bits, TTL level compatible. Can be programmed as alarms.
Note: The 32 TTL outputs can be set or cleared via program control.
Alarm Conditions:
•
May be detected by
Alarm Update Rate:
•
Alarms are updated whenever a channel assigned to an alarm is measured.
Connector:
•
Female DB50 50-pin (32 Alarms, 8 digital inputs, 10 ground pins), mating
connector supplied.
Note: See chapter 3 for information regarding External TTL BNC Connectors.
Service must be performed by qualified personnel. All electrical connections to device,
including the AC line and analog inputs, must be disconnected prior to opening ChartScan
main unit or expansion chassis casing. Internal voltage potentials exist which could cause
bodily injury or death!
ChartScan's ground (on the AC power connector) must be connected to an external earth
ground. Failure to make such a connection could present an electric shock hazard, causing
bodily injury or death!
Fuse:
1/2A, 250V, Slo Blo, 3AG for 100-140V power line, or
1/4A, 250V, Slo Blo, 3AG for 200-240V power line
Fuse failure indicates a possible problem within the device circuitry. If a fuse blows, contact
a qualified service representative. Replacement fuses are to be installed by qualified service
personnel with the unit disconnected from the power source and with all other terminals
disconnected. If the line voltage selector is changed, then the fuse designated for that line
voltage must be used.
2-6 General Information
or by software query (SPOLL or U command).
SRQ
WARNING WARNING WARNING WARNING
WARNING WARNING WARNING WARNING
CAUTION CAUTION CAUTION CAUTION
ChartScan User's Manual