Hach EZ Series Basic User Manual page 17

Terminal
L
N
5.3.4 Connect the signal and control cables
Connect external devices to the signal and control terminals (e.g., sample level detection). The
analyzer has two analog outputs, five relay contacts, four digital outputs and four digital inputs. Refer
to Figure 5 on page 15 and
Pin Description
5
AO1–AO2 Analog outputs: 4–20 mA, active current, maximum load 500 Ω
FCT1–FCT5 Free contacts (digital output): Relay output, contact loading maximum 24 VDC, 0.5 A
PCT1–PCT4 Power contacts (digital outputs): 24 VDC, 0.5 A output
INP1–INP4 Digital inputs: 24 VDC, trigger with external potential free contact
5.3.5 Modbus connection (optional)
Refer to the expanded user manual on the manufacturer's website.
5
Optional modules are available to add a maximum of 10 analog outputs to the analyzer.
Table 4 Wiring information—AC power
Description
Hot/Line (L)
Neutral (N)
Protective earth ground (PE)
Table 5.
Table 5 Wiring—Signal terminals
Cable
1
2
Green with yellow stripe
English 17