InstallationDIGIgarde PLUS User GuideCopyright © 2012 TDSi Last ChangePage 16 13 May, 20162.3.52.3.52.3.52.3.5 Alarm connectionAlarm connectionAlarm connectionAlarm connectionTo use an external alarm (see page 16) for indicating repeated failed verification,an unexpected door open/closed state, duress access or for help indication,connect the alarm power lines to the marked orange and green wires.Label Wire Colour Signal DescriptionAlarm Orange ALARM - Alarm -Green ALARM + Alarm +Figure 8 Alarm connection2.3.62.3.62.3.62.3.6 Lock and Sensor connectionLock and Sensor connectionLock and Sensor connectionLock and Sensor connectionCAUTION! A suppressor MUST be fitted at each lock (see below). Suitablesuppressors (1N4003 diodes) are provided with each MICROgarde controllerand can be purchased separately from TDSi.For each lock, allow 50% more than stated power rating. For example, if the lockhas a rating of 500mA, use a 750mA minimum supply. If the lock has a highercurrent rating than the lock relay (2A?), use a secondary relay.Never run the power supply and sensor or communication lines in the same cable.Label Wire Colour Signal DescriptionLockWhite SENSOR Door Sensor powerBlack GND Door Sensor groundGrey BUTTON Egress buttonBlue NO Normally OpenRed COM CommonYellow NC Normally ClosedFitting a suppressorFitting a suppressorFitting a suppressorFitting a suppressorFit a suppressor across the lock supply as close tothe lock as possible with the white band endconnected to the positive side of the supply.V+0VAlarm +Alarm -