LAB-EL LB-762, Руководство по установке

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LB-762 Controller Installation Manual LAB-EL
3.5.2 Connection of hytherograph type LAB-EL LB-710
Figure 3.5 presents a scheme of connection of hyterograph type LAB-EL LB-710. The meter can be attached to any of the
two S300 inputs which LB-762 regulator is equipped with. After connection of the meter to S300 input it is necessary to
properly configure the regulator, so as to ensure that it could use measurement data from the S300 input.
✁✂
✄
☎ ✆ ✝ ✝
✞✟ ✠ ✠ ✡
☎ ✆ ✝ ✝
Rysunek 3.5: Scheme of connection of LAB-EL LB-710 type meter
3.6 Relay outputs
LB-762 regulator is equipped with 8 relay outputs, used to control any executive devices. For connecting executive devices,
the following connectors are used:
•
RELAY #1
- relay no. 1 (contact),
•
RELAY #2
- relay no. 2 (contact),
•
RELAY #3
- relay no. 3 (contact),
•
RELAY #4
- relay no. 4 (contact),
• RELAY #5 - relay no. 5 (contact),
• RELAY #6 - relay no. 6 (contact),
• RELAY #7 - relay no. 7 (contact),
• RELAY #8 - relay no. 8 (contact - no contact).
Relays 1-7 are shorted, contacts are marked as N.O. (what means inactive condition ”Normally Open” – normally no contact).
Switching on the relay causes short circuit of output contacts.
Relay no. 8 is of contact-no contact type, pairs of contacts are marked as
N.O.
(what means inactive condition ”Normally
Open” – normally no contact) and
N.C.
(what means inactive condition ”Normally Closed” – normally contact). One contact
is common. Switching on the relay causes short circuit of output contacts N.O. and opening of contacts N.C.
Relay outputs are completely insulated galvanically from all other connectors, in particular from the mains supply. This
means that these relays can control any circuits, independently of existing voltages. In any case external power supply is
required to the executive device – the regulator does not emit voltage on relay outputs.
3.6.1 Connection of OPEN-CLOSE 230V valve
Figure 3.6 presents a scheme of connection of a typical valve to the relay output. External connection is required of power
supply voltage (the regulator does not emit power supply on relay outputs), additionally, it is necessary to use an appropriate
fuse protecting the circuit against short-circuit.
Rysunek 3.6: Scheme of connection system of a typical valve to relay output
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