Spectrex SharpEye 40/40M, User Manual

Page: 61 / 90

TM 40/40M, Rev (14) February 2017
Outputs 61
A.3 Outputs
Electrical
Interface There are 5 output wiring options. These options are
defined at the factory per the customer order and cannot
be changed at the customer facility.
See
General Instructions for Electrical Wiring on page 67
for the wiring/terminal diagram for each option.
Unless otherwise specified, the default is option 1. The
wiring arrangement is identified on the detector by the
part number (see Model and Types on page 14).

Option 1 : Power, RS-485, 0 – 20mA (Sink), fault I
relay (N.C.), alarm relay, (N.O.) (see Figure 8).

Option 2 : Power, RS-485, 0 – 20mA (Source) and
HART protocol, fault relay (N.O.), alarm relay, (N.O.),
and (N.C.).

Option 3 : Power, RS-485, 0 – 20mA (Source) and
HART protocol, fault relay (N.O.), alarm relay (N.O.,
N.C).

Option 4 : Power, RS-485, fault relay (N.C.), auxiliary
relay (N.O.), alarm relay, (N.O.).

Option 5 : Power, RS-485, fault relay (N.O.), auxiliary
relay (N.O.), alarm relay, (N.O.).
Electrical
Outputs

Dry Contact Relays
Table 22: Contact Ratings
Relay
Name Type Normal
Position Maximum
Rating
Alarm SPDT N.O., N.C. 2A at 30VDC
Auxiliary SPST N.O. 2A at 30VDC
Fault
(see Notes
1 and 2) SPST N.C. or
N.O. 2A at 30VDC
Notes:
1. The fault relay (in wiring options 1, 2, and 4) is
normally energized closed during normal operation
of the detector. The relay is de-energized open in
a fault condition or low voltage situation.
2. In wiring options 3 and 5 the relay is normally
energized open during normal operation of the
detector. The relay is de-energized close contact in
a fault condition or low voltage situation.

0–20mA Current Output : The 0 – 20mA can be Sink
or Source according to the wiring option source (see
General Instructions for Electrical Wiring on page 67).
The maximum permitted load resistance is 600Ω.