Appendix B
Communications interface
1047358 Rev N Respironics V60 Ventilator User Manual B-17
Remote alarm port WARNING: To prevent possible patient injury due to nonannunciating alarms, verify
the operation of any remote alarm device before use.
WARNING: To ensure the functionality of the remote alarm, connect only Respironics-
approved cables to the remote alarm port.
CAUTION: The remote alarm port is intended to connect only to an SELV (safety
extra-low voltage and ungrounded system with basic insulation to
ground), in accordance with IEC 60601-1. To prevent damage to the
remote alarm, make sure the signal input does not exceed the
maximum rating of 24 VAC or 36 VDC at 500 mA with a minimum
current of 1 mA.
NOTE: Selecting Alarm Silence deactivates the remote alarm.
The remote alarm (nurse call) port allows ventilator alarm conditions to be
annunciated at locations away from the ventilator (for example, when the
ventilator is in an isolation room). The ventilator sends alarm signals to a
remote alarm through the connector at the rear of the ventilator (Figure B-1 on
page B-1). Figure B-5 shows the pin assignments for this connector. The
connector is a standard ¼-inch, female, audio (ring, tip, sleeve) connector.
The ventilator signals an alarm using either a normally open (NO) or normally
closed (NC) relay contact. The de-energized state of the relay represents an
alarm state (any high-priority alarm) and the energized state represents a non-
alarm state.This application requires one of the cables listed in Table B-4.
Figure B-5: Remote alarm port
SleeveCommon
TipNC
RingNO
Remote alarm connector and
cable
Table B-4: Remote alarm cable kits
Description System Part Number
Remote alarm cable kit,
alarm state = open
Use on Normally Closed nurse call systems (system expects to see
open contacts when ventilator alarms). For ¼” jack.
1003741
Remote alarm cable kit,
alarm state = closed
Use on Normally Opened nurse call systems (system expects to
see closed contacts when ventilator alarms). For ¼” jack.
1003742
Remote alarm cable kit Philips Respironics (LifeCare) 1003743
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