Honeywell NXL - Manual (Page 46)

46(96) Cabling and connections Honeywell Honeywell Honeywell Honeywell
6
6.2.5 Control terminal signals
Terminal Signal Technical information
1 +10 Vref Reference voltage Maximum current 10 mA
2 AI1+ Analogue input,
voltage
(MF4 and bigger: voltage or current)
MF2-MF3: Voltage input
MF4-MF6 Selection V or mA with jumper block X8 (see
page 39):
Default: 0– +10V (Ri = 200 kΩ)
0– 20mA (Ri = 250 Ω)
3 AI1– Analogue input common Differential input if not connected to ground;
Allows ±20V differential mode voltage to GND
4 AI2+ Analogue input, voltage or
current Selection V or mA with jumper block X4(MF2-MF3) and
X13 (MF4-MF6)
Default: 0– 20mA (Ri = 250 Ω)
0– +10V (Ri = 200 kΩ)
5 AI2– Analogue input common Differential input;
Allows ±20V differential mode voltage to GND
6 24 Vout 24V auxiliary output voltage
±10%, maximum current 100 mA
7 GND I/O ground Ground for reference and controls
8 DIN1 Digital input 1
9 DIN2 Digital input 2
10 DIN3 Digital input 3
R
i
= min. 5kΩ
11 GND I/O ground Ground for reference and controls
18 AO1+ Analogue signal (+output)
19 AO1–/GND Analogue output common
Output signal range:
Current 0(4)–20mA, R
L
max 500Ω or
A RS 485 Serial bus Differential receiver/transmitter, bus impedance 120Ω
B RS 485 Serial bus Differential receiver/transmitter, bus impedance 120Ω
30 +24V 24V auxiliary input voltage Control power supply backup
21 RO1/1
22 RO1/2
23 RO1/3
Relay output 1 Switching capacity: 24VDC/8A
250VAC/8A
125VDC/0,4A
Relay output terminals are galvanically isolated from the
I/O ground
Table 6-9. Control I/O terminal signals
NOTE! NXL HVAC additional inputs terminal signals defined in section 11 NXLOPTAI