5.2.7 Output 3
Output 3 is available in 808 and 804 only and may be fitted with a relay (form A), or an analogue output depending on the order code. It can be a control or re-transmission output. The function of the output may be selected from a list of options including heat or cool outputs for the control loop, or alarms or events which may be used for external indication.
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P13
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Select P13 to configure Output 3 (OP3).
Output 3 is not available in model 816. |
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The code can be checked against the label on the side of the controller. |
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nonE |
Output disabled (factory default) |
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Heat |
Heat output |
Output 3 controls the heating power demand. The sense is set to normal – the state of the output is shown in the table. This is the usual setting for control outputs. |
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OP3 State when heating |
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Relay |
Energised |
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Analogue |
On |
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CooL |
Cool output |
Output 3 controls the cooling demand. The sense is set to normal – the state of the output is shown in the table. This is the usual setting for control outputs. |
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OP3 State when cooling |
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Relay |
Energised |
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Analogue |
On |
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AL1 |
Alarm 1 |
Output 3 will operate as shown in the table if the alarm selected is active. |
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Alarm active |
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AL2 |
Alarm 2 |
Relay |
Energised |
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AL3 |
Alarm 3 |
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Analogue |
On |
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AL1. i |
Alarm 1 inverted. |
Output 3 will operate as shown in the table if the selected alarm is active. This is the normal setting for alarms since if power to the controller fails an alarm state will be indicated by a powered external device. |
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Alarm active |
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AL2. i |
Alarm 2 inverted |
Relay |
De-energised |
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AL3. i |
Alarm 3 inverted |
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Analogue |
Off (0mA) |
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SP.rt |
SP re-transmission |
If OP3 is mA it can be used to transmit an analogue value proportional to the setpoint to an external device. |
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The value is clipped to Low (SP.Lo) and High (SP.Hi) Setpoint limits set in Level 2. |
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oP.rt |
OP re-transmission |
If OP3 is mA it can be used to transmit an analogue value proportional to the output to an external device. |
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The value of the analogue signal is clipped to the Low (oP.Lo) and High (oP.Hi) output limits set in Level 2. |
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Pv.rt |
PV re-transmission |
If OP3 is mA it can be used to transmit an analogue value proportional to the process variable to an external device. |
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The value of the analogue signal is clipped to the Low and High scale range set in P codes P3 and P4. |
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t.End |
Timer end status |
OP3 can be used to operate an external device to indicate when the timer has timed out. A relay is energised when the timer has timed out. |
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Timer Operation is described in section 4.11. |
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t.rUn |
Timer run status |
OP3 can be used to operate an external device to indicate when the timer is running. A relay is energised when the timer is running. |
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