FLEX Ex Spring Clamp Terminal Base
9
1797-5.2 - September 1999
1797-TB3S Specifications
Number of Terminals
1 row of 16, 2 rows of 18
Terminal Type
Spring-clamp - To open, insert bladed
screwdriver (0.100 - 0.120in/2.54-3.05mm)
and lift up.
Terminals Assignments
+34, -35, +50, -51, and 96
pin
female I/O connector
pins
i
30-32, 62-64, 94-96
i
36, 49
All Other Terminals
Only for intrinsically safe circuits
U
i
<10V dc
I
i
<2.5A
C
i
<1nF
L
i
Negligible
Must not be used for any connection
U
i
<30V dc
I
i
<100mA
C
i
<1nF
L
i
Negligible
Flexbus Connection
Intrinsically Safe
U
i
<10V dc
I
i
<400mA
C
i
<1nF
L
i
Negligible
Isolation Voltage
Channel-to-channel isolation determined by
inserted module
Weight
200g (approximately)
Dimensions (with module
installed in base) Inches
(Millimeters)
3.7H x 3.7W x 2.7D
(94H x 94W x 69D)
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
Shock
Operating
Non-Operating
Vibration
-20 to 70
o
C (-4 to 158
o
F)
-40 to 85
o
C (-40 to 185
o
F)
5 to 95% noncondensing
Tested 15g peak acceleration, 11 (±1)ms pulse
width
Tested 15g peak acceleration, 11 (±1)ms pulse
width
Tested 2g @ 10-500Hz per IEC 68-2-6
Conductors
Wire Size
12 gauge (4mm
2
) stranded maximum
1.2mm (3/64in) insulation maximum
Agency Certification
II 2G EEx ia IIC T4
Class I Division 1 & 2 Groups A-D T4
Class I Zone 1 & 2 AEx ia IIC T4
Certificate of Conformity
DMT 98 ATEX E012 U
Termination connections are unique with each I/O module. Refer to the
appropriate I/O module’s installation instructions.
Allen-Bradley
