16 | BHGE
® 2017 Baker Hughes, a GE company. All rights reserved.
5.4.2.
W
IRING AND CONNECTIONS
All wiring and connections must be done in accordance with EN/IEC 60079-14, EN/IEC 61241-14 and/or local and national codes for
hazardous area installations.
5.4.3.
A
LLOWABLE SUPPLY VOLTAGES
Electrical connections on terminal board must respect po and
–
, as well as maximum allowable supply voltages given
below. Connect the instrument to the ground using the ground terminals internally and externally to the case.
Supply Voltage
U (VDC)
AO_1
AO_2
DO_1/DO_2
MIN
MAX
MIN
MAX
MIN
MAX
Explosion proof
10 V
40 V
10 V
30 V
0.5 V
30 V
Intrinsic Safety
10 V
30 V
10 V
30 V
0.5 V
30 V
5.4.4.
M
AXIMUM POWER
3 W into 12400 case
5.4.5.
O
UTPUT SIGNAL AND LOAD RESISTANCE
AO_1 and AO_2
Response (scan) time: <60ms
Power interruption without causing reset: <100ms
Power-Up time: < 1s
Compliance with NAMUR NE-43 specification
▪
standard level measurement: 3.8mA to 20.5mA
▪
Low or high failsafe signals (severe fault): < 3.6mA or > 21mA
Maximum load resistance
For AO_1 and AO_2: R max (
) = U (V)
–
10 (V)
Imax (A)
DO_1 and DO_2
There are two independent isolated output switches with open collectors. 1A maximum output signal. A load resistance must be
used in series to limit maximum current. 30 VDC across switch terminals and 1 A cannot exist simultaneously; doing so will result
in failure of the digital output circuit.
Figure 8
–
Terminal board
Standard version with clamp (Ref. #90)
Figure 9 - Terminal board
Japanese version with screws (Ref. #90A)
R
load
U
Figure 10
Summary of Contents for Masoneilan 12400 Series
Page 46: ...44 BHGE 2017 Baker Hughes a GE company All rights reserved...
Page 62: ...60 BHGE 2017 Baker Hughes a GE company All rights reserved APPENDICES...
Page 68: ...66 BHGE 2017 Baker Hughes a GE company All rights reserved APPENDIX C see following pages...
Page 72: ...70 BHGE 2017 Baker Hughes a GE company All rights reserved APPENDIX D see following pages...
