Emerson Rosemount 702 - Page 47

37
Reference Manual
00809-0200-4702, Rev CA
Section 5: Operation and Maintenance: Models 702DX22 and 702DX61
February 2013
Operation and Maintenance: Models 702DX22 and 702DX61
Dual Input, Limit Contact Logic
When configured for Limit Contact Logic, the 702 transmitter will accept the input from two
single pole single throw switches on inputs S1 and S2, and will use limit contact logic for the
determination of the wireless outputs. The following tables describe the wireless outputs
available when using limit contact logic.
Figure 5-3. Dual Input, Limit Contacts
Single or Dual Input, No Logic
Switch
Input
Wireless
Output
Switch
Input
Wireless
Output
S1 PV S2 SV
Closed TRUE (1.0) Closed TRUE
(1.0)
Open FALSE (0.0) Open FALSE
(0.0)
Dual Input, Limit Contact Logic
Switch Inputs Wireless Outputs
S1 S2 PV SV
Open Open TRAVEL
(0.5)
TRAVEL (0.5)
Open Closed FALSE (0.0) FALSE (0.0)
Closed Open TRUE (1.0) TRUE (1.0)
Closed Closed FAULT
(NaN)
FAULT(NaN)
Dual Input
Limit Contacts
S1
CMN
S2
CMN