330130-045-00-00延伸線纜
機架接口模塊使用兩種I/O模塊類型
即機架接口I/O模塊和數據管理器I/O模塊。這些I/O模塊允許您將3301主機和通信處理器（TDIX或DDIX）連接到3301機架，并將菊花鏈機架連接在一起。本節介紹如何使用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。一次只能將一個機架接口輸入/輸出模塊安裝在機架接口模塊后面（機架安裝或面板安裝機架中）或機架接口模塊上方（隔板機架中）。另請參見第4.1節，一個Data Manager I/O模塊可以安裝在電源輸入模塊和機架接口I/O模塊之間（在機架安裝或面板安裝機架中），或者安裝在電源模塊和機架界面I/O模塊之間的電源上方（在隔板機架中）。參見第4.2節4輸入/輸出模塊說明3301/20操作和維護16 4.1機架接口輸入/輸出（I/O）模塊?？捎糜?301監控系統的兩種機架接口I/O模塊是RS-232/RS-422 I/O模塊和調制解調器I/O模塊。以下功能對兩個I/O模塊都是通用的。機架接口輸入/輸出模塊必須安裝在機架接口模塊后面（機架安裝或面板安裝機架中）或機架接口模塊上方（隔板機架中）。1）
正常繼電器：
正常繼電器正常通電，用于指示3301監測系統是否正常。2）機架RS-422：用于菊花鏈連接下一個3301機架。最多12個機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?機架報警抑制?機架復位3301/20操作和維護4輸入/輸出模塊說明17 OK繼電器以下項目將導致OK繼電器不正常：?從3301機架上拆除機架接口模塊?將模塊插入3301機架（自檢期間）?傳感器不正常（鍵相器除外）?內部硬件故障a模塊?配置故障?插槽ID故障?3301機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/（機框狀態）正常狀態不正常狀態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機架。電纜將連接到此機架上的機架RS-422連接器和下一個3301機架上的主機連接器之間。此連接只能使用RS-422。參考第4.1.2節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公用線（COM）。跳閘倍增（TM）用于在機架應處于跳閘倍增狀態時發出信號。
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.
