Chemtrac HydroAct 4, Руководство пользователя

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2.3 Installation 17
2.3.4 Electrical Connections
1. Auxiliary power from secondary PSU
2. 12V input from main PSU
3. Communication card slots
4. Sensor and output card slots
5. Digital input configuration jumpers
6. Relay and digital input connectors
7. AC Power to main PSU
8. Auxiliary power out
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9. AC power connectors
10. Electromechanical relays
The connections are made via press to open connectors or screw terminals. An insulated screw-
driver can be used to operate the connector. Each instrument has a large number of possible wiring
combinations depending on which sensors, inputs, outputs or communications are selected at the time
of purchase. This is achieved by the use of expansion electronics cards specific to each role. These
expansion cards are fitted to “Slots”.
The connections for sensors, inputs, outputs and communication cards are detailed in Part II of this
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If secondary PSU is not fitted, these connectors are linked to the main 12V PSU.