鎽� 瑕侊細鐣�(d膩ng)鍓嶈ū澶氬瀷铏�(h脿o)鐨凱LC閮藉叿鏈夎剤娌栧搴﹁(di脿o)鍒讹紙PWM锛夎几鍑烘ā濉�锛屽埄鐢ㄥ畠鍙互瀵�(sh铆)鐝�(xi脿n)鍦ㄥ伐妤�(y猫)鐝�(xi脿n)鍫�(ch菐ng)姊濅欢涓嬬殑闆绘(j墨)瑾�(di脿o)閫熺瓑鎺у埗鍔熻兘銆傛湰鏂囦互S7-313C鐐轰緥锛岃┏绱�(x矛)闂¤堪浜哖WM鐨勫姛鑳界‖浠剁祫鎱�(t脿i)銆佺法绋嬫柟娉曞強鍏舵噳(y墨ng)鐢ㄤ腑闇€瑕佹敞鎰忕殑浜嬮爡(xi脿ng)锛屽苟涓旀垚鍔熷湴灏囨鍔熻兘妯″鎳�(y墨ng)鐢ㄥ湪璁婃サ鎬х瓑闆㈠瓙寮х剨瑷�(sh猫)鍌欓€佺挡姗�(j墨)妲�(g貌u)涓�锛屽湪寮�(qi谩ng)闆诲姬骞叉摼鎯呮硜涓嬪(sh铆)鐝�(xi脿n)浜嗗皪(du矛)閫佺挡閫熷害鐨勭簿纰烘帶鍒躲€傛湰鏂囧皪(du矛)姝ら绯荤当(t菕ng)鐨勯枊鐧�(f膩)鍏锋湁鎸囧皫(d菐o)浣滅敤銆� 闂�(gu膩n)閸佃锛�鍙法绋嬮倧杓帶鍒跺櫒锛圥LC锛� 宸ユキ(y猫)鎺у埗 PWM 寮х剨瑷�(sh猫)鍌� [b][align=center]Application Research on PWM module of Programmable Logic Controller Li Zhinning , Zhang Yingtang Wang Li[/align][/b] Abstract锛�Many types PLC contain PWM module, which can control equipment in industrial conditions. This paper, e.g. S7-313C鈥檚 PWM module, introduces how to set and program the PWM function. Special attentions are also presented while using PWM module. In order to avoid arc鈥檚 EMC, the PWM module is used to control speed of wire feeder in variable polarity plasma arc welding equipment and control voltage experiment is described. This paper is instructive for PWM module control of PLC. Keywords: PLC, industrial control, PWM, Arc welding equipment 1 搴忚█ 銆€銆€鍙法绋嬮倧杓帶鍒跺櫒锛圥LC锛夋槸涓€绋櫘閬嶉噰鐢ㄧ殑宸ユキ(y猫)鎺у埗瑷�(sh猫)鍌欙紝瀹冩姉骞叉摼鎬ц兘濂�锛屽彲闈犳€ч珮锛屽凡缍�(j墨ng)鍦ㄥ伐妤�(y猫)鐢熺敘(ch菐n)涓緱鍒颁簡寤ｆ硾鐨勬噳(y墨ng)鐢ㄣ€傞毃钁桺LC鍒堕€犳妧琛�(sh霉)鐨勪笉鏂烽€�(j矛n)姝�锛孭LC宸茬稉(j墨ng)涓嶅儏鍍呰几鍏�銆佽几鍑洪倧杓辜闆诲櫒鐨勭祫鍚堬紝鑰屾槸涓€鍊�(g猫)闆嗘垚浜咥/D銆丏/A銆丳ROFIBUS浠ュ強PWM绛夋ā濉婄殑寰�(f霉)闆滆ō(sh猫)鍌�锛屽彲浠ュ(sh铆)鐝�(xi脿n)姣旇純寰�(f霉)闆滅殑宸ユキ(y猫)鐝�(xi脿n)鍫�(ch菐ng)閬庣▼鎺у埗鍔熻兘锛屽苟鍙寜鐓т笉鍚岀従(xi脿n)鍫�(ch菐ng)绺界窔鐨勮姹傦紝绲勬垚FCS绯荤当(t菕ng)锛屽(sh铆)鐝�(xi脿n)宸ユキ(y猫)鐢熺敘(ch菐n)鐝�(xi脿n)鍫�(ch菐ng)鎺у埗鑷嫊(d貌ng)鍖栥€� 銆€銆€瑷卞鍨嬭櫉(h脿o)鐨凱LC锛屽S7-200銆丼7-300銆丗P0銆丗P1銆丆J1M绛�锛岄兘闆嗘垚浜哖WM鍔熻兘妯″锛屽埄鐢ㄥ畠鍙互鏂逛究鍦板(sh铆)鐝�(xi脿n)濡傞浕姗�(j墨)瑾�(di脿o)閫熺瓑鎺у埗鍔熻兘銆傛湰鏂囬嚌灏�(du矛)S7300绯诲垪涓殑S7-313C鍨婸LC鐨凱WM鍔熻兘妯″锛岀爺绌朵簡鍏禤WM鍔熻兘闁嬬櫦(f膩)涓殑杌熺‖浠剁祫鎱�(t脿i)浠ュ強绶ㄧ▼鏂规硶锛岀祼(ji茅)鍚堝叾鍦ㄨ畩妤垫€х瓑闆㈠瓙寮х剨瑷�(sh猫)鍌欎腑鐨勫(sh铆)闅涙噳(y墨ng)鐢�锛岄棥鏄庝簡闁嬬櫦(f膩)涓噳(y墨ng)瑭叉敞鎰忕殑浜嬮爡(xi脿ng)锛屽皪(du矛)浠婂悗閫�(j矛n)琛屾椤為枊鐧�(f膩)鐨勬妧琛�(sh霉)浜哄摗鍏锋湁鎸囧皫(d菐o)浣滅敤銆� 瑭虫儏璜�(q菒ng)榛�(di菐n)鎿婏細鍙法绋嬮倧杓帶鍒跺櫒涓璓WM鍔熻兘妯″鐨勬噳(y墨ng)鐢ㄧ爺绌�