Connecting Voltage Signals To The Z-2400-A2I Analogue Inputs; Connecting Current Signals To The Z-2400-A2I Analogue Inputs; Connecting Pulse, Frequency & On/Off State Signals To The Z-2400-A2I Analogue Inputs - Intech Instruments Z-2400-A2 Series Installation Manual

Connecting Voltage Signals to the Z-2400-A2I Analogue Inputs.

Note 1. Input voltage must not exceed 24Vdc.
Note 2. All cables to be screened, and the screens
earthed at one end only.

Connecting Current Signals to the Z-2400-A2I Analogue Inputs.

Note 1. Input voltage must not exceed 24Vdc.
Note 2. The Z-2400-A2I must remain powered up to
ensure the integrity of the mA loop. If the Z-2400-A2I is
not powered, the 4~20mA loop is broken.
If a constant 4~20mA loop connection is required, it is
recommend that you use a resistor across the
Z-2400-A2I analogue input terminal, and re-program
the Z-2400-A2I input for Voltage instead.
i.e. 250Ω for 1~5V input.
500Ω for 2~10V input.
Note 3. Because the Z-2400-A2I inputs are totally
Isolated, it is safe to use the same instrument quality
power supply on both channels as well as the power
supply for the device.
Note 4. All cables to be
screened and the
screens earthed at one
end only.
Connecting Pulse, Frequency & On/Off State Signals to the Z-2400-A2I Analogue Inputs.
Both the two analogue inputs (CH1&2) plus the four dedicated digital inputs (DI 1~4) can be used for pulse and
frequency outputs from flow or energy meters. These inputs can also be used for on/off state inputs.
Note 1. Inputs can be used as state Pseudo
Digital inputs for sensing a clean, voltage free,
field contact.
Note 2. All cables to be screened and the
screens earthed at one end only.
Instrument Quality
Power Supply
PSW-10-F
NPN Open
mV or V
Input
mV or V
Input
2 Wire Loop
Current
Transmitter
4 Wire
Current
Transmitter
Reed Switch or
Relay Contact
Collector
15
Z-2400-A2I
Instrument Quality
24Vdc Power Supply
PSW-10-F
Z-2400-A2I
Z-2400-A2I
4
CH2
5
6
1
2 CH1
3
4
CH2
5
6
1
CH1
2
3
4
CH2
5
6
1
CH1
2
3