Bacharach AGM300 Manual De Usuario

16

 

Instruction 3015-4275 

Upon installation of the optional 4–20 mAdc Interface Board (Page 7) (P/N 3015-3133), the AGM300 has the 
capability of providing dual 4-20 mAdc scrolling current loop outputs for connection to external monitoring 
devices. 

The interfaces are set up as follows: 

Loop 1 indicates zone area 
Loop 2 indicates PPM 

The external devices are connected to the AGM300 using a shielded dual twisted pair cable. Use any of the 
remaining service knockouts to gain access to the interior of the monitor. Locate the Dual 4–20 mAdc Output 
connector (Page 7) and remove it from the circuit board.  Secure the wire leads to the connector orienting them 
as shown in the diagram below. Check to make sure the polarity matches the wiring at the external device. 
When you are through securing the connections, carefully plug the connector back onto the circuit board. 

NOTE: When one or both current loop outputs are not used, install a jumper wire between the ground the 
unused loop terminal(s) to prevent the system from generating a current loop fault. 

 

CAUTION - The loop outputs have isolated grounds.  
Therefore, the cable shield should be terminated at the 
receiver and not at the AGM300.  The signal for both 
current loops must be returned to the AGM300. 

 

 

 

 

 

 

NOTE: The ground connections are common. 

 

LOOP 1 = ZONE  

LOOP 2 = PPM 

5 mAdc = Zone 1 

Default 

 

6 mAdc – Zone 2 

0.016 mAdc = 1 PPM 

 

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Scalable via Software 

 

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4 mAdc   = 0 PPM 

 

20 mAdc = Zone 16 

20 mAdc = 1000 PPM 

 
 
 
 

LOOP 2 
PPM 

LOOP 1 
ZONE 

GROUND