Vaisala HUMICAP HMT330 SERIES Uživatelská příručka stáhnout pdf (Strana 37)

Chapter 3 _______________________________________________________________ Installation

VAISALA _______________________________________________________________________ 37

Signal and Power Supply Wiring

When connecting the transmitter with 8-pin connector, see section

8-Pin Connector on page 64. When wiring the power supply module, see

section Power Supply Module on page 49.

0506-028

Figure 20 Screw Terminal Block on Motherboard

The following numbers refer to Figure 20:

1 = Power supply terminals 10 ... 35 VDC, 24 VAC

2 = User port (RS-232 terminals)

3 = Analog signal terminals

WARNING

Make sure that you connect only de-energized wires.

1. Unfasten the four cover screws and open the transmitter cover.

2. Insert the power supply wires and signal wires through the cable

bushing in the bottom of the transmitter; see the grounding

instructions in the previous sections.

3. Connect the analog output cables to terminals: Ch1 +, Ch1-, Ch2+,

Ch2-. Connect the RS-232 user port cables to terminals RxD, GND

and TxD. For more information about the RS-232 connection refer

to section Serial Line Communication on page 73.

4. When wiring the optional modules, see the corresponding section

for instructions:

- RS-422/485 Interface on page 57

- Relays on page 55

- Third Analog Output on page 53

- LAN Interface on page 59

- WLAN Interface on page 60

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Vaisala HUMICAP HMT330 SERIES Uživatelská příručka Strana 37