7
D1093
- SIL 3 Relay Output Module with Line and Load diagnostics
G.M. International ISM0093-12
The proof test shall be performed to reveal dangerous faults which are undetected by diagnostic. This means that it is necessary to specify how dangerous undetected faults, which
have been noted during the FMEDA, can be revealed during proof test.
Proof test consists of the following steps:
Testing procedure at T-proof
Steps
Action
1
Bypass the safety-related PLC or take other appropriate action to avoid a false trip.
2
Supply diagnostic circuit (terminals “9-11” and “10-12”) and watch LEDs or fault output for verification.
For D1093S single channel, verify input-output functionality for two different application:
1. normally energized (NE) loads (terminals “5” and “6”): supply input channel (terminals “13” & “14”) and verify that load is energized; then shutdown input
channel and verify that load is de-energized (safe state). In both cases, if the load is disconnected (fault condition), the fault red LED must be lit and the fault
output must be de-energized
.
2. normally de-energized (ND) loads (terminals “7” & “8”): supply input channel (terminals “13” & “14”) and verify that load is energized (safe state); then
shutdown input channel and verify that load is de-energized. In both cases, if load is disconnected (fault condition), the fault red LED must be lit and the fault
output must be de-energized.
3
Remove the bypass from the safety-related PLC or restore normal operation.
This test reveals almost 90 % of all possible Dangerous Undetected failures in the relay module.
D1093 is an isolated electrical apparatus installed into standard EN50022 T35 DIN Rail located in Safe Area/Non Hazardous Locations or Zone 2, Group IIC, Temperature Classification
T4, Class I, Division 2, Groups A, B, C, D, Temperature Code T4 and Class I, Zone 2, Group IIC, IIB, IIA Temperature Code T4 Hazardous Area/Hazardous Locations (according to
EN/IEC60079-15, FM Class No. 3611, CSA-C22.2 No. 213-M1987, CSA-E60079-15) within the specified operating temperature limits Tamb -20 to +60 °C, and connected to equipment
with a maximum limit for AC power supply of 250 Vrms.
Non-incendive field wiring is not recognized by the Canadian Electrical Code, installation is permitted in the US only. For installation of the unit in a Class I, Division 2 or Class I, Zone 2
location, the wiring between the control equipment and the D1093 electrical apparatus shall be accomplished via conduit connections or another acceptable Division 2, Zone 2 wiring
method according to the NEC and the CEC. Not to be connected to control equipment that uses or generates more than 250 Vrms or Vdc with respect to earth ground.
D1093 must be installed, operated and maintained only by qualified personnel, in accordance to the relevant national/international installation standardsn
(e.g. IEC/EN60079-14 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical installations in hazardous areas (other than mines), BS 5345 Pt4, VDE 165,
ANSI/ISA RP12.06.01 Installation of Intrinsically Safe System for Hazardous (Classified) Locations, National Electrical Code NEC ANSI/NFPA 70 Section 504 and 505,
Canadian Electrical Code CEC) following the established installation rules. De-energize power source (turn off power supply voltage) before plug or unplug the terminal blocks when
installed in Hazardous Area/ Hazardous Locations or unless area is known to be nonhazardous.
Warning: substitution of components may impair Intrinsic Safety and suitability for Division 2, Zone 2. Warning: de-energize main power source (turn off power supply
voltage) and disconnect plug-in terminal blocks before opening the enclosure to avoid electrical shock when connected to live hazardous potential
.
Explosion Hazard: to prevent ignition of flammable or combustible atmospheres, disconnect power before servicing or unless area is known to be nonhazardous.
Failure to properly installation or use of the equipment may risk to damage the unit or severe personal injury.
The unit cannot be repaired by the end user and must be returned to the manufacturer or his authorized representative. Any unauthorized modification must be avoided.
Warning
Operation
D1093 relay module is suitable for the switching of safety related circuits, providing isolation between the input and output contacts.
D1093 provides 1 DPST contact for normally energized (NE) loads and 1 SPST contact for normally de-energized (ND) loads. In addition, there is a diagnostic circuit for line breakage
and load operating anomaly detection in both NE and ND load conditions.
The fault indication is provided by a SPST normally energized relay (normally close contact), which is de-energized (open contact) in case of line or load fault.
The fault output, diagnostic circuit, input and output contacts are isolated each other. In fact, the diagnostic circuit is supplied from independent external power supply.
A “POWER ON” green led lights when supply power is present. A “RELAY STATUS” yellow led lights when input is powered, showing that relay is energized and relay output contacts
are closed. A “LINE FAULT” red led lights when line breakage and load operating anomaly is detected.
D1093
Relay Output
FM Approved under
non-incendive field wiring
Unclassified Locations or
Hazardous (Classified) Locations
Class I, Division 2, Groups A, B, C, D, T-Code T4
Class I, Zone 2, Group IIC, IIB, IIA, T-Code T4
Hazardous (Classified) Locations
Class I, Division 2, Groups A, B, C, D
Class II, Division 2, Groups E, F, G
Class III, Division 2
Class I, Zone 2, Group IIC, IIB, IIA
FM Approved under non-incendive field
wiring (permitted only for US installations),
or third party approval
Unclassified Locations
Must not use or generate
more than 250 Vrms or Vdc
Control
Equipment
Control
Equipment
15
16
13
14
Non-incendive
Equipment
8
7
6
-
+
5
-
2
4
3
+
1
Non-incendive
Equipment
+
9
12
10
11
-
-
+
+
-
Power Supply
Non-incendive
Equipment
