Server User Manual

Hardware and Connectivity 47
Powering Up the IOLAN
Wiring up an HV unit
Terminal # Description Usage
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.
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.