330130-045-00-00延伸線纜
機(jī)架接口模塊使用兩種I/O模塊類型
即機(jī)架接口I/O模塊和數(shù)據(jù)管理器I/O模塊。這些I/O模塊允許您將3301主機(jī)和通信處理器（TDIX或DDIX）連接到3301機(jī)架，并將菊花鏈機(jī)架連接在一起。本節(jié)介紹如何使用I/O模塊上的連接器，列出要使用的電纜，并顯示電纜的引腳。一次只能將一個機(jī)架接口輸入/輸出模塊安裝在機(jī)架接口模塊后面（機(jī)架安裝或面板安裝機(jī)架中）或機(jī)架接口模塊上方（隔板機(jī)架中）。另請參見第4.1節(jié)，一個Data Manager I/O模塊可以安裝在電源輸入模塊和機(jī)架接口I/O模塊之間（在機(jī)架安裝或面板安裝機(jī)架中），或者安裝在電源模塊和機(jī)架界面I/O模塊之間的電源上方（在隔板機(jī)架中）。參見第4.2節(jié)4輸入/輸出模塊說明3301/20操作和維護(hù)16 4.1機(jī)架接口輸入/輸出（I/O）模塊?？捎糜?301監(jiān)控系統(tǒng)的兩種機(jī)架接口I/O模塊是RS-232/RS-422 I/O模塊和調(diào)制解調(diào)器I/O模塊。以下功能對兩個I/O模塊都是通用的。機(jī)架接口輸入/輸出模塊必須安裝在機(jī)架接口模塊后面（機(jī)架安裝或面板安裝機(jī)架中）或機(jī)架接口模塊上方（隔板機(jī)架中）。1）
正常繼電器：
正常繼電器正常通電，用于指示3301監(jiān)測系統(tǒng)是否正常。2）機(jī)架RS-422：用于菊花鏈連接下一個3301機(jī)架。最多12個機(jī)架可以菊花鏈連接在一起。此連接只能使用RS-422。3） 外部觸點：?跳閘倍增?機(jī)架報警抑制?機(jī)架復(fù)位3301/20操作和維護(hù)4輸入/輸出模塊說明17 OK繼電器以下項目將導(dǎo)致OK繼電器不正常：?從3301機(jī)架上拆除機(jī)架接口模塊?將模塊插入3301機(jī)架（自檢期間）?傳感器不正常（鍵相器除外）?內(nèi)部硬件故障a模塊?配置故障?插槽ID故障?3301機(jī)架中檢測到故障的任何模塊下圖顯示了正常繼電器的不同接線方式：正常通電無電源/有電源/（機(jī)框狀態(tài)）正常狀態(tài)不正常狀態(tài)No表示常開。ARM指電樞。NC表示常閉。RACK RS-422用于菊花鏈連接到鏈中的下一個3301機(jī)架。電纜將連接到此機(jī)架上的機(jī)架RS-422連接器和下一個3301機(jī)架上的主機(jī)連接器之間。此連接只能使用RS-422。參考第4.1.2節(jié)外部觸點這些需要干觸點輸入。要啟用特定功能，請將所需觸點短接到系統(tǒng)公用線（COM）。跳閘倍增（TM）用于在機(jī)架應(yīng)處于跳閘倍增狀態(tài)時發(fā)出信號。
The Rack Interface Module uses two I/O module types
The rack interface I/O module and the data manager I/O module. These I/O modules allow you to connect a 3301 host and communication processor (TDIX or DDIX) to a 3301 rack and connect daisy chain racks together. This section describes how to use the connectors on the I/O module, lists the cables to be used, and displays the pins of the cables. Only one Rack Interface I/O Module can be installed behind a Rack Interface Module (in a rack mounted or panel mounted rack) or above a Rack Interface Module (in a bulkhead rack) at a time. Also see section 4.1, a Data Manager I/O module can be installed between the power input module and the rack interface I/O module (in a rack mounted or panel mounted rack), or above the power supply between the power module and the rack interface I/O module (in a bulkhead rack). Refer to Section 4.2 4 I/O Module Description 3301/20 Operation and Maintenance 16 4.1 Rack Interface I/O Module. The two types of rack interface I/O modules available for the 3301 monitoring system are RS-232/RS-422 I/O modules and modem I/O modules. The following functions are common to both I/O modules. The Rack Interface I/O Module must be installed behind the Rack Interface Module (in a rack mounted or panel mounted rack) or above the Rack Interface Module (in a bulkhead rack). 1）
Normal relay:
The normal relay is normally energized to indicate whether the 3301 monitoring system is normal. 2) Rack RS-422: used to connect the next 3301 rack with daisy chain. Up to 12 racks can be daisy chained together. This connection can only use RS-422. 3) External contacts: ? Trip Multiplier ? Rack Alarm Inhibit ? Rack Reset 3301/20 Operation and Maintenance 4 I/O Module Description 17 OK Relay The following items will cause the OK relay to malfunction: ? Remove the Rack Interface Module from the 3301 rack ? Insert the module into the 3301 rack (during self-test) ? The sensor is not OK (except for the Keyphasor) ? Internal hardware failure a module ? Configuration failure ? Slot ID failure ? Any module with failure detected in the 3301 rack The following figure shows the different wiring methods of the normal relay: normally powered on without power supply/with power supply/(rack status) normal status abnormal status No means normally open. ARM refers to the armature. NC means normally closed. RACK RS-422 is used for daisy chain connection to the next 3301 rack in the chain. The cable connects between the rack RS-422 connector on this rack and the host connector on the next 3301 rack. This connection can only use RS-422. Refer to Section 4.1.2 External Contacts These require dry contact inputs. To enable a specific function, short the desired contact to the system common (COM). Trip Multiplier (TM) is used to signal when the rack should be in Trip Multiplier status.
