John TenEyck
05-26-2017, 4:02 PM
I got my friend's 16" Zefam jointer running today with the upgraded static phase converter he bought for it. It comes up to speed in 3 seconds now and seems to run very smoothly. I wired it so we could use the machine's normal on/off switches. This SPC replaces a lower rated unit. When I installed that one I couldn't get power to the motor and traced it to a thermal overload on the contactor. I bypassed the contactor, temporarily, and the contactor closed when I pushed the start button and the motor started. I didn't fool with the overload today when I installed the new SPC, but I'd like to resolve the issue for peace of mind.
The contactor is a Telemecanique, made in USA which I didn't expect with that name:
https://lh3.googleusercontent.com/42WGZia8zNiPS2xKzRhOLeCdjAs7mdLNZlZjtcajLuxTIIiXFQ WxjBlhpvlT-4QbwiWfIKreq_vRZ_tva4TXd86mBka4S8enT9s3yW-o8-hPwYTOfKymCwjRi4X-UB22KAv58qOMFJpJPk4yEKLxU_J-BZyo51nBHKeMDx2gm6T0rq6YiRjb7V2BkkYDDagZpD5lR-1cNTe9DCoqCq5NmWf_Dt0d9m0_lqzTIrLNVL3LRZQLxliZXPgb FbdkymZ48Ytyib0VG2I2w5oDJA6cXNVrfuYdJTGueQLVvp2NuG hKsCFZC0FrCfthufMcY47522lVopv9o9YQS6SzBRCGAG7E6c1R-d-Pow9DKhaD3ifO0heeuMn4yv24tQRq-iQaytByL8mavp2NQX9k9Tb1hBr3wcG2pAKFIrhl03LSKR3QTC7 dFrW8fO-L8gD-w6PK14bfDOSn_FBop51KNFcTUVfYtn9b_SkPTYxi9hjcq8VuOb BV0g4nT2cle8M6z1e2V_t0QL4_ijpyGJGx5yta3dKAgQFOrOxJ eKOLdCDWWJ7cG8ykP2Ebkd1rIwQp9HygmGFeax03J7yhLX78Sj UJsBOPPjZzz3z1KEseLPbPY-Cq63uUSQ=w136-h220-no
Attached at the bottom of the contactor is this overload relay:
https://lh3.googleusercontent.com/8U7cLz1EpMDfGYqY4hGV5R5wnBfZ4DMY7X4mmLkdtrXrz946Ht iIVDvuPW9GA8Q32agRfS59LMXsvOjMI7j7SCGC_pr7j70HyHqk F9s7sDx8MLG9GiTQIILMc9sQCuqLyHSyFX6wTonqQ_C4ErZjaM wkvMy4Y_uGyeBhJq_jFPGQlZ-iIb-rYvjJzDUB7A_mxnJ1eT64esvw4l9ZqNJCsWULyfuTJUY8buPTJ 1AaYZHFADtrndXidu8nKEfOqGLPN9rcClfHNYTR3XCzWHrkYGc Rn1AvDurSQzH3z1t5387Rzag57YHTVYmc4qmOgCXvuOFfDieVZ sc8Du_lMN8EsJ6TeRJTrQdyXEvXiD8O4Hwe1zZnW9nAGTLRmsj 6Lat8sP_3QuTIlAjhB8eMlmdm05Cy4Pnn7Jv4QrnjTvI34dvkJ IjJOlV8f8jjs9xCRBeSKqeDNWN9BmYscxoEGCFe2Lq4R4YC82Q yPTBb5zEHztX7Rgih-BKaA8DutCSX9tAgZ9-b_tC3jU1eJ0wh_rTJAS-_m4eH1vumg0viP17AXWQGPGitCirm_GFubwi7kE2zyO3p-Pt04DfPQixZtivwAcubpV5tb7WEX9jlP-jNEs_29wtZM3UqprFGQIZxC0IYXx-0FyUmwvu8YRHgq5D5cy330X1Iu1zY_LhdvrLc_SI=w354-h628-no
Which has this label on one side:
https://lh3.googleusercontent.com/3Krymy3vFXxw0mhbZ0z0KhIMv-UJSc20uIDfw2QjkJQWvIh_9g62_cs6mCqKfRgWzHKzJwC4YZKi zcnHAMQjq7ihRb62P8Bs9y0gTLD301mcw1hfQpHRic7AVTCD5w YCYtyN1N6KRkVk-14I96GjjM9aKhHj-yLqRhN4Jejc_Q2SqrOCAe5DoeuK8iicmY7z7SBYZ1j5CT5zGYG zL1wOS1nUwjXSXTZxE4gDkbqfM2r3wjChAMZFJsqfUwGK9cy6L peB0etJzjsj6rV-b_uRCldx20zTTGI1dWhyyaLS97qdhUoHEeXE_YyGdtUAUHdjel zW8qphc7WsWWEmv3snsZP7t7JO25YDQC8_UPpbl1Zpd27zEuZf T_Iv6bEbqM2pbFKeAHbT6w-tJsAWhnXaw0U4ymrTe99QaXyL7XZeBL_pYFHZIzBqtKGUs3AkA THGZ6Rtj_C3iVmvsTkDqnlt7CcwHzYJq1J2HrjyjIo3y8sz4UV xRMuU4ugnT8zaPv7NJ3AGQkSfIVFhOMJ7XlQe_hee1nZ542hIs qpN406bEGV79_DumdCuCbygMKYeIgfHXBfc6_XEgOBLn12L7_4 Vv-GR69q0Rcmk6quJMKUStHsd-ZAEjCzgqFjK-M1IPdPNU3zUCV-7i48Py3IXQQmkLU_u9_qyo1BExBG2hcNu4hY=w1366-h352-no
What's confusing to me is that the relay is rated for a normal range of 5.5 to 8 amps (now set at 8 amps, as I found it), but the motor has a FLA rating of 11.2 amps and draws around 10 amps when running with no load except turning the cutterhead. There is a reset button on the relay, the red button at the right in the photo, but it won't reset when I push it. The wires now connected to T1, T2, and T3 on the contactor were connected to the 3 lugs on the overload relay until I bypassed it.
The former owner ran it on 230 V 3 phase power. We're running it on 220V single phase power through a static phase converter. He claims it ran fine. If so, the relay must have been the appropriate size, though it seems undersized to me. This is a new motor, but of the same 5 HP rating and amp. draw (actually, marginally lower) as the one it replaced.
Anyone have any ideas of what's going on here? Any input is appreciated. Thanks in advance.
John
The contactor is a Telemecanique, made in USA which I didn't expect with that name:
https://lh3.googleusercontent.com/42WGZia8zNiPS2xKzRhOLeCdjAs7mdLNZlZjtcajLuxTIIiXFQ WxjBlhpvlT-4QbwiWfIKreq_vRZ_tva4TXd86mBka4S8enT9s3yW-o8-hPwYTOfKymCwjRi4X-UB22KAv58qOMFJpJPk4yEKLxU_J-BZyo51nBHKeMDx2gm6T0rq6YiRjb7V2BkkYDDagZpD5lR-1cNTe9DCoqCq5NmWf_Dt0d9m0_lqzTIrLNVL3LRZQLxliZXPgb FbdkymZ48Ytyib0VG2I2w5oDJA6cXNVrfuYdJTGueQLVvp2NuG hKsCFZC0FrCfthufMcY47522lVopv9o9YQS6SzBRCGAG7E6c1R-d-Pow9DKhaD3ifO0heeuMn4yv24tQRq-iQaytByL8mavp2NQX9k9Tb1hBr3wcG2pAKFIrhl03LSKR3QTC7 dFrW8fO-L8gD-w6PK14bfDOSn_FBop51KNFcTUVfYtn9b_SkPTYxi9hjcq8VuOb BV0g4nT2cle8M6z1e2V_t0QL4_ijpyGJGx5yta3dKAgQFOrOxJ eKOLdCDWWJ7cG8ykP2Ebkd1rIwQp9HygmGFeax03J7yhLX78Sj UJsBOPPjZzz3z1KEseLPbPY-Cq63uUSQ=w136-h220-no
Attached at the bottom of the contactor is this overload relay:
https://lh3.googleusercontent.com/8U7cLz1EpMDfGYqY4hGV5R5wnBfZ4DMY7X4mmLkdtrXrz946Ht iIVDvuPW9GA8Q32agRfS59LMXsvOjMI7j7SCGC_pr7j70HyHqk F9s7sDx8MLG9GiTQIILMc9sQCuqLyHSyFX6wTonqQ_C4ErZjaM wkvMy4Y_uGyeBhJq_jFPGQlZ-iIb-rYvjJzDUB7A_mxnJ1eT64esvw4l9ZqNJCsWULyfuTJUY8buPTJ 1AaYZHFADtrndXidu8nKEfOqGLPN9rcClfHNYTR3XCzWHrkYGc Rn1AvDurSQzH3z1t5387Rzag57YHTVYmc4qmOgCXvuOFfDieVZ sc8Du_lMN8EsJ6TeRJTrQdyXEvXiD8O4Hwe1zZnW9nAGTLRmsj 6Lat8sP_3QuTIlAjhB8eMlmdm05Cy4Pnn7Jv4QrnjTvI34dvkJ IjJOlV8f8jjs9xCRBeSKqeDNWN9BmYscxoEGCFe2Lq4R4YC82Q yPTBb5zEHztX7Rgih-BKaA8DutCSX9tAgZ9-b_tC3jU1eJ0wh_rTJAS-_m4eH1vumg0viP17AXWQGPGitCirm_GFubwi7kE2zyO3p-Pt04DfPQixZtivwAcubpV5tb7WEX9jlP-jNEs_29wtZM3UqprFGQIZxC0IYXx-0FyUmwvu8YRHgq5D5cy330X1Iu1zY_LhdvrLc_SI=w354-h628-no
Which has this label on one side:
https://lh3.googleusercontent.com/3Krymy3vFXxw0mhbZ0z0KhIMv-UJSc20uIDfw2QjkJQWvIh_9g62_cs6mCqKfRgWzHKzJwC4YZKi zcnHAMQjq7ihRb62P8Bs9y0gTLD301mcw1hfQpHRic7AVTCD5w YCYtyN1N6KRkVk-14I96GjjM9aKhHj-yLqRhN4Jejc_Q2SqrOCAe5DoeuK8iicmY7z7SBYZ1j5CT5zGYG zL1wOS1nUwjXSXTZxE4gDkbqfM2r3wjChAMZFJsqfUwGK9cy6L peB0etJzjsj6rV-b_uRCldx20zTTGI1dWhyyaLS97qdhUoHEeXE_YyGdtUAUHdjel zW8qphc7WsWWEmv3snsZP7t7JO25YDQC8_UPpbl1Zpd27zEuZf T_Iv6bEbqM2pbFKeAHbT6w-tJsAWhnXaw0U4ymrTe99QaXyL7XZeBL_pYFHZIzBqtKGUs3AkA THGZ6Rtj_C3iVmvsTkDqnlt7CcwHzYJq1J2HrjyjIo3y8sz4UV xRMuU4ugnT8zaPv7NJ3AGQkSfIVFhOMJ7XlQe_hee1nZ542hIs qpN406bEGV79_DumdCuCbygMKYeIgfHXBfc6_XEgOBLn12L7_4 Vv-GR69q0Rcmk6quJMKUStHsd-ZAEjCzgqFjK-M1IPdPNU3zUCV-7i48Py3IXQQmkLU_u9_qyo1BExBG2hcNu4hY=w1366-h352-no
What's confusing to me is that the relay is rated for a normal range of 5.5 to 8 amps (now set at 8 amps, as I found it), but the motor has a FLA rating of 11.2 amps and draws around 10 amps when running with no load except turning the cutterhead. There is a reset button on the relay, the red button at the right in the photo, but it won't reset when I push it. The wires now connected to T1, T2, and T3 on the contactor were connected to the 3 lugs on the overload relay until I bypassed it.
The former owner ran it on 230 V 3 phase power. We're running it on 220V single phase power through a static phase converter. He claims it ran fine. If so, the relay must have been the appropriate size, though it seems undersized to me. This is a new motor, but of the same 5 HP rating and amp. draw (actually, marginally lower) as the one it replaced.
Anyone have any ideas of what's going on here? Any input is appreciated. Thanks in advance.
John