Perle Systems 4030370 Manuale Utente

Hardware and Connectivity  49

Powering up your IOLAN

NOTES:
1. 

For terminal# 1 through 6, the use of ring terminals size #6 (M3.5) is recommended using stranded wire size AWG 
18-14. Tighten all screws to a torque of 12 Lb-in (1.36 Nm).

2. 

For terminal# E, the use of ring terminal size #8 (M4) is recommended using stranded wire size AWG 18-14. 
Tighten screw to a torque of 12 Lb-in (1.36 Nm).

3. 

Use the “Chassis Ground” terminal connection for grounding the unit. “Earth Ground” should be used as secondary 
grounding source only.

4. 

Be sure to replace the clear plastic electrical safety shield before applying power to the unit.

1

Normally Open Normally Open is a fail-safe relay connection. Use this with the 

Common terminal to act as switch contacts that remain open when 

the unit is powered off or in a failure state.

2

Common

Common is a fail-safe relay connection. Use this terminal in 
conjunction with the Normally Open or Normally Closed terminals.

3

Normally 

Closed

Normally Closed is a fail-safe relay connection. Use this with the 

Common terminal to act as switch contacts that remain closed 

when the unit is powered off or in a failure state.

4

+ / L 

+ / L is connected to the positive (+) input for DC sources or to the 
Live input for AC sources. Use with partner terminal -/N.

5

- / N

- / N is connected to the negative (-) input for DC sources or to the 

Neutral input for AC sources. Use with partner terminal +/L.

6

Chassis Ground Chassis Ground must be connected to "Equipment Ground" for DC 

installations or "Safety Ground" for AC installations.

E

Earth Ground

Earth Ground is a connection to the chassis that can be used for 

earth bonding.