Sentry Industries 5000 User Manual

 

APPENDIX G  - MODEL 4314 OUTPUT EXPANSION PANEL 

The Model 4314-01 Output Expansion Panel extends 
Sentry low and high alarm capability by providing 
individual single pole double throw (SPDT) dry contacts 
for each alarm level for each module, and also provides 
eight analog outputs for retransmission of the gas 
concentration values for each sensor.  Model 4314-01 is 
an alternative option to Model 5392 and requires the 
firmware enhancement.  The panel is designed to be 
installed as follows: 

• 

Rack, Chassis and Wall Mount Controllers:  
Mounted on stand-offs on the connector panel of 
the controller, or installed on the back of spare 
slots in 19” instrument shelf Model 5331-00. 

• 

NEMA 4X Enclosure:  Mounted on swinging 
connector panel beside the display panel. 

The panel connects to the Sentry controller via a ribbon 
cable and a two conductor wire harness. 

Expansion Panels supplied with original Sentry shipments 
are factory pre-assembled with the controller.  For NEMA 
enclosures, the panel is fully installed prior to shipment.  
For other controllers minor final assembly is described 
below. 

Expansion Panels supplied as add-on to original Sentry 
controllers require that the connector panel of the 
controller be removed so that threaded stand-offs 
(supplied) can be installed onto the four corners of the 
panel. 

The following are instructions for final installation and 
wiring of the Output Panel: 

1.  Perform normal installation of the Sentry 

controller and modules and perform function 
checks of the basic system. 

2.  Power down the system. 

3.  Plug the Output Expansion Panel connector 

cable into the connector panel of the controller.  
See J3  Figure  8-4 not required for NEMA 
enclosures]. 

4.  Connect the two position DC power connector 

to Power (P) and Ground (G) on any channel of 
the Sentry controller. 

5.  Mount the panel on the four stand-offs on the 

connector panel of the controller [not required 
for NEMA enclosures]. 

6.  Make the necessary connections to the HIGH 

and LOW relays for each of the Modules as 
required for the particular application. Note that 
these are dry contact relays and that power must 
be connected from an external source. 

7.  Make the necessary connections to the analog 

output terminals located across the lower side of 
the panel.  The outputs are preconfigured for 
4-20 mA proportional to the full scale of the 
corresponding input sensor module.  The 
outputs can be forced high or low for test 
purposes by using diagnostic codes.  See 
Section 7.3.5 

Figure 8-4 shows the location of the sixteen relays which 
are (marked as "high" and "low" alarms for the respective 
modules) and the eight analog outputs marked. 

The analog outputs are always active except during 
calibration when they are locked at 4 mA. 

When any module connected to the controller is in alarm 
it's respective relay will be energized. 

To operate alarms or other auxiliary equipment connect to 
the required relays according to the module number. 

Several logic configurations are available: 

• 

The user can configure each alarm as latching or 
non-latching via the 

 menu 

activity. 

• 

A factory option available with the 
Enhancement Package allows all high, or all low 
alarms, or both, to be configured for alarm 
acknowledge when latched. 

• 

A factory option available with the 
Enhancement Package allows alarm states to be 
combined into zones and voting groups for 
activation of individual relays. 

Table  8-2 is helpful for determining the relay actions 
which will occur under various alarm conditions based on 
the user’s configuration.