SPA2-2 system requirements

Electrical requirements

The SPA2-2 is powered from the a.c. mains supply via a connector to IEC 60320/C14. The electrical ratings of the unit are as follows:

100 – 240 V ac +10%, -15%47 – 63 Hz750 W maximum

This equipment must be connected to a protective earth conductor via a three core mains (line) cable. The mains plug shall be inserted only into a socket outlet provided with a protective earth contact. The protective earth contact shall not be negated by the use of an extension cable without protective conductor.

WARNING: Any interruption of the protective conductor may make the equipment dangerous. Make sure that the grounding requirements are strictly observed. 

NOTE: An earth stud (M5 thread) is provided to allow bonding of the CMM metal parts to the protective earth. When the SPA2-2 is used with the UCC2 or UCClite-2 controller the CMM frame should be bonded to both the UCC and the SPA2-2 earth studs.

The SPA2-2 is isolated from AC power by disconnecting the IEC mains connector on the rear panel. This should be sited within easy reach of the CMM operator. If any additional means of isolation is required, it must be specified and fitted by the machine manufacturer or the installer of the product. The disconnection device must meet the requirements of IEC 61010-1 and any national wiring regulations applicable in the country of installation.

The installer must ensure that adequate mains over-current protection is provided for the controller equipment (UCC and SPA). See the electrical requirements sections of the appropriate installation guides. This must be in accordance with any national wiring regulations applicable in the country of installation.

Environmental requirements

Indoor use

IP20 (no protection against water)*


up to 2000 m

Operating temperature

0 °C to +50 °C

Storage temperature

-25 °C to +70 °C

Relative humidity

80% maximum (non-condensing) for temperatures up to +31 °C.
Linear decrease to 50% at +40 °C

Transient overvoltages

Installation category II

Pollution degree


Maximum weight

9.48Kg (20.9 lb) (7-axis system)

*NOTE: If a higher IP rating is required an additional external enclosure will be required to house the SPA2-2. This enclosure must enable the internal ambient temperature to remain within the SPA2-2 operating temperature range.