Description of 1746-IM16
The 1746-IM16 SLC 500 Digital AC Input Module by Allen-Bradley is
an input (AC) module with sixteen 200-240V AC inputs and is fitted
into any available SLC 500 I/O chassis using an RTB (Removable
Terminal Block). It has 16 points per common and an input operating
voltage of 170-265V AC at 47-63Hz. It has a backplane current
rating of 0.085A at 5V DC and an electrical signal delay of 35ms
for ON and 45ms for OFF state around its input points. It has an
OFF-state rating of 50V AC voltage loss and 2mA maximum OFF-state
current. The 1746-IM16 has an input current (nom) of 12mA around
each input points and has a maximum surge current of 1.6A, which
can last for a maximum duration of 0.5ms. It has a maximum power
dissipation of 0.35W at each point and the total heat dissipated by
the module is at 6W. It provides voltage isolation between input
terminals and control logic tested at 1500V and is NEMA standard
ICS 2-230-rated for noise immunity. The operating temperature of
the 1746-IM16 ranges between 0 and 60 °C (32 and 140 °F) at 5-95%
non-condensing humidity limits and it has a non-operational storage
temperature of -40 and 85 °C (-40 and 185 °F). The 1746-IM16 has
an operational shock withstand of 30G and can sustain an operating
2.5G vibration at 57-200Hz.
The Allen-Bradley 1746-IM16 is an SLC 500 AC input module. This
module is specifically a discrete input module, featuring sixteen
(16) input channels in a single group. Each channel of this input
module operates at an input voltage range of 170-265 Volts AC,
47-63 Hertz with a nominal input signal of 200 / 240 Volts AC.
This module fits into any SLC 500 chassis. It may be installed in
the local rack, where the SLC 500 processor is installed; to an SLC
500 expansion rack, or as a component module of distributed I/O
systems in larger control systems. It has a backplane current
consumption of 0.085 Amperes @ 5 Volts DC. Each channels exhibits a
signal delay of 35 milliseconds for OFF to ON change of state and
45 milliseconds for ON to OFF transition. It has a maximum
off-state voltage of 50 Volts AC and maximum off-state current of 2
milliamperes. Furthermore, the module’s input current is 12
milliamperes @ 240 Volts AC, nominal and capable of withstanding a
maximum inrush current of 1.6 Amperes with a maximum duration of 5
milliseconds.
This module is ideally used to interface signaling devices that
delivers 200/240 Volts AC towards the input channels of the module.
It may also be used with DC input devices; however, an external
interposing relay must be installed with the AC voltage supplied to
the contacts of the interposing relay. There is no specific limit
to the number of installation instances allowed for this module.
This mainly depends on the number of I/Os the host processor is
capable of accommodating and the embedded memory size.
Technical specifications for 1746-IM16
| Manufacturer | Rockwell Automation |
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| Signal delay | ON = 35 ms; OFF - 45 ms |
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| Module Type | AC Input Module |
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| Series | SLC 500 |
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| Part Number/Catalog No. | 1746-IM16 |
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| Brand | Allen-Bradley |
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| Input voltage range: | 170-265 VAC, 47-63 Hz |
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| Off-state voltage, max: | 30V AC |
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| Off-state current, max: | 2 mA |
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| Input current: | 12 mA @ 120V AC, nom |
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| Inrush current, max: | 0.8 A |
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| Inrush current time duration, max: | 0.5 ms |
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| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
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| Operating Temperature | 0...+60 °C (+32...+140 °F) |
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| Relative Humidity | 5 to 95% without condensation |
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| Agency Certification | UL / C-UL listed Class I, Division 2, Groups A, B, C, D CE marked
for all applicable directives C-Tick marked for all applicable acts |
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| Voltage Range | 170-265 Volts AC |
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| Inputs | 16 |
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| Backplane Current (5 Volts DC) | 85 milliamps |
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| Off State Current | 2 milliamps |
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| Applications | General Purpose 125 Volts DC Inputs |
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| I/O Connection | 1746-HT and 1746-HCA |
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| Step Response | 100 milliseconds in, 2.5 milliseconds out |
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| UPC | 10662468092736 |
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The 1746-IM16 is an Allen-Bradley AC input module that is part of
the SLC-500 series. The 1746-IM16’s heat dissipation rating is 0.35
watts per point, its minimum wattage is 0.425 watts, and its total
wattage is 6 watts. The 1746-IM16 operates with a voltage of
200-240V AC for the signal input and its operating voltage is
170-265V AC at 47-63Hz. In addition, the 1746-IM16 has 16 input
points with 16 points per common. Its backplane current is 0.085A
at 5V DC or 0A at 24V DC. For signal delays, the 1746-IM16 has a
maximum of 35ms and 45ms ON and OFF delays, respectively.
The 1746-IM16’s maximum off-state voltage is 50V AC, its maximum
off-state current is 2mA, and its nominal input current is 12mA at
240V. The 1746-IM16’s maximum inrush current is 1.6A and its
maximum inrush current time is 0.5ms. Despite affecting the
operation of the 1746-IM16 input module, a current limiting
resistor can be used for minimizing the inrush current. An AC input
device e.g. the 1746-IM16, needs to be compatible with the SLC-500
input circuit’s inrush current.
The 1746-IM16 AC input module’s operating temperature range of 0-60
º C, at a storage temperature range of -40-85 º C and a humidity of
5-95% in a non-condensing environment for operation and storage.
The 1746-IM16 adheres to the ICS 2-230 NEMA standards for noise
immunity. The 1746-IM16 meets the Class I, Division 2 Groups A, B,
C, and D requirements for use in hazardous environments. The
1746-IM16 has an operating shock rating of 30G.
