Product Overview; Controller Cabinet; Terminal Block - Grundfos LC 115 Serie Manual Del Usaurio

3. Product overview

3.1 Controller cabinet

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8
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Fig. 1 Internal construction of the LCD 115, 12-23A, DOL
Pos. Description
1 CU 215 module
2 Terminal block for sensor and alarm devices. See fig. 2.
3 High-level relay
4 Contactor
5 Overload relay. Only DOL.
6 Terminal block for power supply
Fuse holders for control circuit fuses (1 to 3 depending
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on current/voltage variant)
8 Isolation transformer
9 Earth bar
10 Cable glands
11 Holes for mounting screws
254
1
4 3 2
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9
PE

3.2 Terminal block

Fig. 2 Terminal block for sensor and alarm devices (LCD)
Pos. Description
1-2-3 Output for external high-level alarm device (NO-NC)
T11-T21 Input for motor PTC resistance/thermal switch
Input for second motor PTC resistance/thermal
T12-T22
switch. Only LCD.
Input for analog level sensor. Ub delivers a 24 VDC
lo-Ub
voltage to the CU 215.
Output for external overtemperature alarm device
4-5
(NO)
41-42 Input for high-level float switch (optional)
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