ACO MultiControl Mono, Руководство пользователя

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MultiControl Mono
Ver. 1.1
35
6.7 External 4 – 20 mA level probe
“4 - 20 mA Interface” must be selected in the menu under “Level Control”. An external two-wire 4 - 20 mA
sensor can be connected to terminals 34 (-) and 35 (+).
The sensor is supplied with a stabilised D.C. voltage of approximately 20 V. On delivery, the measuring range
of the level probe is set so that it matches the measuring range of the internal pressure sensor. If a level probe
with a different measuring range is connected, the relevant setting must be changed in the menu (see section
4.2). The output is active, i.e. the probe is supplied with voltage by the control system.
The relevant regulations must be observed for use in areas with a potentially explosive atmosphere.
6.8 Analogue outputs
The analogue outputs are designated for connection to control systems.
The signals change proportionally to the level.
0 - 10 V = terminals 36 (+) and 37 (-) can be subjected to max. 10 mA
4 - 10 mA = terminals 38 (+) and 39 (-) have a maximum load impedance of 10 mA
The length of the lines for the analogue outputs must not exceed 1.50 m and must not be routed together with
faulty lines.
7.0 Test operation without pump
7.1
The following must be observed in order to test the control system without pumping:
- Connecting N and L1 is sufficient
- The motor current monitoring must be set to 0 A, otherwise the message “L with no load” will be displayed
- Terminal 21/22 must be jumpered, otherwise the message “Thermal fault 2” will be displayed
- The thermal faults for the pump must be disabled in the Settings menu, otherwise the message “Thermal
fault 1” will appear in the display