TRICONEX 3504E 检测从正常通电电路到断开状态的转换
在TMR数字输入模块上，所有关键信号路径都是100%的三倍，以保证
安全性和最大可用性。每个通道独立调节信号并提供
现场和Tricon控制器之间的隔离。3504E型高密度模块
一个例外，它没有通道到通道隔离。
3502E、3503E和3505E型包括自检功能，可验证
Tricon控制器，用于检测从正常通电电路到断开状态的转换。因为
大多数安全系统使用断电跳闸设置，检测关闭状态的能力是
重要功能。为了测试接通输入是否卡住，输入电路中的开关闭合至
允许零输入（Off）被光学隔离电路读取。最后一次数据读取是
在测试运行时冻结在I/O处理器中。
3501E/T 115 VAC/VDC 32 TMR，隔离，非通用
3502E 48 VAC/VDC 32 TMR，常见于8组，具有电路卡在自检功能。
3503E 24 VAC/VDC 32 TMR，常见于8组，具有电路卡在自检功能。
3504E 24/48 VDC 64 TMR，普通，高密度，直流耦合，带电路
卡顿开启或卡顿关闭自检功能。在中配置
TriStation为24或48 VDC。
3505E 24 VDC 32 TMR，普通，低阈值，电路卡在接通或
卡住关闭自检功能。
3564 24 VDC 64单个，普通
每个数字输入模块都有三个独立的通道，用于处理输入到
单元在每个通道上，微处理器扫描每个输入点，编译数据，以及
根据需要将其传输到主处理器。然后输入数据在Main进行投票
处理器在处理之前确保最高的完整性。
所有数字输入模块都能对每个通道进行完整、持续的诊断。的失败
任何通道上的任何诊断都会激活故障指示灯，进而激活机箱
报警信号。故障指示灯指向通道故障，而不是模块故障。该模块是
保证在出现单一故障时正常运行，并可继续运行
正确处理某些类型的多重故障。
On TMR Digital Input Modules, all critical signal paths are 100 percent triplicated to guarantee
safety and maximum availability. Each channel conditions signals independently and provides
isolation between the field and the Tricon controller. The model 3504E high-density module is
an exception—it has no channel-to-channel isolation.
Models 3502E, 3503E, and 3505E include a self-test feature which verifies the ability of the
Tricon controller to detect transitions from a normally energized circuit to the Off state. Because
most safety systems use a de-energize-to-trip setting, the ability to detect the Off state is an
important feature. To test for stuck-On inputs, a switch within the input circuitry is closed to
allow a zero input (Off) to be read by the optical isolation circuitry. The last data reading is
frozen in the I/O Processor while the test is running.
3501E/T 115 VAC/VDC 32 TMR, isolated, non-commoned
3502E 48 VAC/VDC 32 TMR, commoned in groups of 8, with a circuit stuck-On selftest feature.
3503E 24 VAC/VDC 32 TMR, commoned in groups of 8, with a circuit stuck-On selftest feature.
3504E 24/48 VDC 64 TMR, commoned, high density, DC-coupled, with a circuit
stuck-On or stuck-Off self-test feature. Configured in
TriStation as 24 or 48 VDC.
3505E 24 VDC 32 TMR, commoned, low threshold, with a circuit stuck-On or
stuck-Off self-test feature.
3564 24 VDC 64 Single, commoned
Each Digital Input Module has three independent channels which process all data input to the
module. On each channel, a microprocessor scans each input point, compiles data, and
transmits it to the Main Processors upon demand. Then input data is voted at the Main
Processors before processing to ensure the highest integrity.
All Digital Input Modules sustain complete, ongoing diagnostics for each channel. Failure of
any diagnostic on any channel activates the Fault indicator which in turn activates the chassis
alarm signal. The Fault indicator points to a channel fault, not a module failure. The module is
guaranteed to operate properly in the presence of a single fault and may continue to operate
properly with certain kinds of multiple faults.
