Electrical Installation; Remote Alarm Indication; Mxs-Ds Hygrometer Connection; Mxa Analogue Outputs - Parker Pneudri Maxi MX103 Handbuch

MX 102 - MX110 User Guide
3.4

Electrical Installation

A fully qualified electrical engineer must undertake all electrical work in accordance with local regulations.
Warning
The electrical supply cables should be connected to the dryer at the dedicated terminals as shown in diagram A7 in Annex A,
using the cable glands provided.
The dryer must be bonded to earth at the terminal marked with the international symbol IEC-60417 – 5017.
Warning
The dryer should be connected to the electrical supply through a switch or circuit breaker rated at 250VAC, 2A with a minimum
short circuit rating of 10KA. This device should be clearly and indelibly marked as the disconnecting device for the equipment
and located in close
proximity to the equipment and be easily accessible to the operator.
Overcurrent protection must be fitted as part of the building installation. This protection should be selected in accordance with
local and national code regulations with a maximum short circuit rating of 10KA.
3.4.1
If the remote alarm indication relay is used, the electrical enclosure will contain more than one live circuit. The relay
connections will remain live when the mains supply is disconnected.
Warning
3.4.2
3.4.3

Remote alarm indication

Each dryer is fitted with a set of volt free relay contacts designed for remote alarm indication and are rated 1A
max @ 250Vac (1A @ 30Vdc).
The alarm circuit should be connected between the "COM" and the normally closed terminals, "N/C" of the
relay. Under normal operation the relay will be energised and the alarm circuit will be open. When a fault
occurs, e.g. power failure, the relay will de-energise causing the alarm circuit to be complete.
The external alarm circuit should be connected to the dryer at the dedicated terminals as shown in diagram A8
in Annex A. using the cable glands provided.
MXS–DS Hygrometer connection.
The MXS – DS dryer operates on a variable cycle time controlled via a dewpoint dependent switching energy
management system. The hygrometer should be connected to the dryer at the dedicated terminals as shown in
diagram A9 in Annex A, using the cable glands provided.

MXA Analogue Outputs

The MXA dryer includes two sets of 4 – 20mA linear analogue outputs, which are used for the optional
re-transmission of the pressure and dewpoint readings. Connection to the outputs should be made at the
dedicated terminals shown in diagram A10 in Annex A, using the cable glands provided.
More detailed information is available in the MXA advanced controller addendum (dh Stock No: 178620002)
10